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STA 301 Quiz
50 % correct answer
6 Solved Quiz
Quiz Start Time: 01:10 PM Time Left 89
sec(s)
Question # 1 of 10 ( Start time: 01:10:28 PM ) Total Marks: 1
A discrete probability function f(x) is always:
Select correct option:
Zero
One
Negative
Nonnegative
Quiz Start Time: 01:10 PM Time Left 88
sec(s)
Question # 2 of 10 ( Start time: 01:11:20 PM ) Total Marks: 1
If f(x) is a continuous probability function, then P(X = 2) is:
Select correct option:
1
0
1/2
2
Quiz Start Time: 01:10 PM Time Left 88
sec(s)
Question # 3 of 10 ( Start time: 01:12:34 PM ) Total Marks: 1
The range of the binomial distribution is:
Select correct option:
0, 1, 2, ………… 100
0, 1, 2, ………… n
0, 1, 2, ………… x
1,2, …………….n
Quiz Start Time: 01:10 PM Time Left 89
sec(s)
Question # 4 of 10 ( Start time: 01:13:05 PM ) Total Marks: 1
In which of the following situations binomial distributions is approximate to normal distribution?
Select correct option:
n = 50, p = 0.01
n = 500, p = 0.001
n = 100, p = 0.05
n = 50, p = 0.02
Quiz Start Time: 01:10 PM Time Left 89
sec(s)
Question # 5 of 10 ( Start time: 01:14:26 PM ) Total Marks: 1
The location and shape of the normal curve is (are) determined by:
Select correct option:
Mean
Variance
Mean & variance
Mean & standard deviation
Quiz Start Time: 01:10 PM Time Left 89
sec(s)
Question # 6 of 10 ( Start time: 01:14:56 PM ) Total Marks: 1
A random experiment has five outcomes in its sample space {s1, s2, s3, s4, s5}. If P(s1)=0.2,P(s2)=0.3, P(s3)=0.1 and P(s4)=0.2 then P(s5)=?
Select correct option:
1
0.2
0.8
0.5
Quiz Start Time: 01:10 PM Time Left 87
sec(s)
Question # 7 of 10 ( Start time: 01:15:54 PM ) Total Marks: 1
The joint density function f(x,y) will be a pdf if
Select correct option:
Both of integrals f(x,y) dx dy =1
Both of integrals f(x,y) dx dy >1
Both of integrals f(x,y) dx dy <1
Both of integrals f(x,y) dx dy =0
Quiz Start Time: 01:10 PM Time Left 88
sec(s)
Question # 8 of 10 ( Start time: 01:16:12 PM ) Total Marks: 1
Which of the following is correct property for joint probability distribution of X and Y:
Select correct option:
Sigma f(X,Y)=1
Sigma f(Y,X)=1
Both of above
None of above
Quiz Start Time: 01:10 PM Time Left 89
sec(s)
Question # 9 of 10 ( Start time: 01:16:39 PM ) Total Marks: 1
A random variable that can assume every possible value in an interval [a, b]:
Select correct option:
Discrete variable
Continuous variable
Qualitative variable
Categorical variable
Quiz Start Time: 01:10 PM Time Left 88
sec(s)
Question # 10 of 10 ( Start time: 01:17:02 PM ) Total Marks: 1
Normal approximation to the binomial distribution is used when:
Select correct option:
np>5
nq>5
Both of the above
None of the above
eshal mehak: The Maximum Likelihood Estimators (MLE) are ………… and …………… but not necessarily ………
Select correct option:
Unbiased, consistent, efficient
Consistent, unbiased, efficient
Unbiased, efficient, consistent
Consistent, efficient, unbiased
eshal mehak: A probability density function ‘f(x)’ has the following property:
Select correct option:
f(x) <= 0
f(x) < 0
f(x) > 0
f(x) >= 0
eshal mehak: For a continuous random variable X, P(X = x) is:
Select correct option:
0
0.5
1
undefined
eshal mehak: An urn contains 4 red balls and 6 green balls. A sample of 4 balls is selected from the urn without replacement. It is the example of:
Select correct option:
Binomial distribution
Hypergrometric distribution
Poisson distribution
Exponential distribution
eshal mehak: The probability distribution of the proportion of successes in all possible samples is called the:
Select correct option:
Sampling distribution
Sampling probability distribution
Sampling distribution of sample proportions
Sampling distribution of Population proportions
eshal mehak: E(4X + 5) =________
Select correct option:
12 E (X)
4 E (X) + 5
16 E (X) + 5
16 E (X)
eshal mehak: For good approximation of Poisson distribution to the binomial distribution, which of the following condition (s) is/are required:
Select correct option:
The population size is large relative to the sample size
The probability, p, is close to .5 and the population size is large
The probability, p, is small and the sample size is large
The probability, p, is close to .5 and the sample size is large
eshal mehak: If an estimator is more efficient then the other estimator, its shape of the sampling distribution will be
Select correct option:
Flattered
Normal
Highly peaked
Skewed to right
MC060201183 : MUDDASSAR HUSSAIN
Quiz Start Time: 08:45 PM
Time Left 88
sec(s)
Question # 1 of 10 ( Start time: 08:45:59 PM ) Total Marks: 1
What does it mean when a data set has a standard deviation equal to zero:
Select correct option:
Mean = median = mode
All of the values in the data are same
The mean of the data is also zero
All values of the data appear with the same frequency
me: MC060201183 : MUDDASSAR HUSSAIN
Quiz Start Time: 08:45 PM
Time Left 88
sec(s)
Question # 2 of 10 ( Start time: 08:47:20 PM ) Total Marks: 1
Match the binomial probability P(x< 23) with the correct statement.
Select correct option:
P(there are at most 23 successes)
P (there are fewer than 23 successes)
P (there are more than 23 successes)
P (there are at least 23 successes)
me: MC060201183 : MUDDASSAR HUSSAIN
Quiz Start Time: 08:45 PM
Time Left 88
sec(s)
Question # 3 of 10 ( Start time: 08:48:23 PM ) Total Marks: 1
In statistics, the term ‘expected value’ implies the ___ value.
Select correct option:
Independent
Normal
Standard
Mean
me: MC060201183 : MUDDASSAR HUSSAIN
Quiz Start Time: 08:45 PM
Time Left 88
sec(s)
Question # 4 of 10 ( Start time: 08:49:11 PM ) Total Marks: 1
A quantity obtained by applying certain rule or formula is known as
Select correct option:
Estimate
Estimator
Parameter
Proportion
Quiz Start Time: 08:45 PM
Time Left 86
sec(s)
Question # 5 of 10 ( Start time: 08:49:49 PM ) Total Marks: 1
Total no. of possible samples of size 2 (without replacement) from the population of size 6, will be:
Select correct option:
20
15
10
18
.
me: MC060201183 : MUDDASSAR HUSSAIN
Quiz Start Time: 08:45 PM
Time Left 88
sec(s)
Question # 6 of 10 ( Start time: 08:50:41 PM ) Total Marks: 1
When a coin is tossed 3 times, the probability of getting 3 or less tails is
Select correct option:
1/2
0
1
3/5
1
me: MC060201183 : MUDDASSAR HUSSAIN
Quiz Start Time: 08:45 PM
Time Left 88
sec(s)
Question # 7 of 10 ( Start time: 08:51:53 PM ) Total Marks: 1
Total no. of possible samples of size 3 (with replacement) from the population of size 6, will be:
Select correct option:
256
196
216
325
me: MC060201183 : MUDDASSAR HUSSAIN
Quiz Start Time: 08:45 PM
Time Left 89
sec(s)
Question # 8 of 10 ( Start time: 08:52:29 PM ) Total Marks: 1
If c is a constant, then E(c) = ___
Select correct option:
0
1
c
c
MC060201183 : MUDDASSAR HUSSAIN
Quiz Start Time: 08:45 PM
Time Left 88
sec(s)
Question # 9 of 10 ( Start time: 08:53:35 PM ) Total Marks: 1
Using the normal approximation to the binomial distribution with n= 3 and p= 0.0571 the value of mean is:
Select correct option:
0.1713
0.2132
0.5133
0.1923
MC060201183 : MUDDASSAR HUSSAIN
Quiz Start Time: 08:45 PM
Time Left 88
sec(s)
Question # 10 of 10 ( Start time: 08:54:28 PM ) Total Marks: 1
Suppose 60% of a herd of cattle is infected with a particular disease. Let Y = the number of nondiseased cattle in a sample of size 5. the distribution of Y is:
Select correct option:
Binomial with n = 5 and p = 0.6
Binomial with n = 5 and p = 0.4
Binomial with n = 5 and p = 0.5
Poisson with u = .6
Quiz Conference: 1
me: MT060201146 : KAMRAN ELAHI
Quiz Start Time: 08:57 PM
Time Left 81
sec(s)
Question # 1 of 10 ( Start time: 08:57:27 PM ) Total Marks: 1
A random experiment has five outcomes in its sample space {s1, s2, s3, s4, s5}. If P(s1)=0.2,P(s2)=0.3, P(s3)=0.1 and P(s4)=0.2 then P(s5)=?
Select correct option:
1
0.2
0.8
0.5
me: MT060201146 : KAMRAN ELAHI
Quiz Start Time: 08:57 PM
Time Left 88
sec(s)
Question # 2 of 10 ( Start time: 08:58:31 PM ) Total Marks: 1
The probability of success changes from trial to trial, is the property of:
Select correct option:
Binomial experiment
Hypergeometric experiment
Both binomial & hypergeometric experiment
Poisson experiment
MT060201146 : KAMRAN ELAHI
Quiz Start Time: 08:57 PM
Time Left 88
sec(s)
Question # 3 of 10 ( Start time: 08:59:05 PM ) Total Marks: 1
If a statistic used as an estimator, has its expected value equal to the true value of the population parameter being estimated then it is called ........
Select correct option:
Consistent
Unbiased
Efficient
Sufficient
me: MT060201146 : KAMRAN ELAHI
Quiz Start Time: 08:57 PM
Time Left 88
sec(s)
Question # 4 of 10 ( Start time: 09:00:22 PM ) Total Marks: 1
In moments method, how many equations are needed to find the 2 unknown parameters?
Select correct option:
2
3
n/2
me: MT060201146 : KAMRAN ELAHI
Quiz Start Time: 08:57 PM
Time Left 89
sec(s)
Question # 5 of 10 ( Start time: 09:01:26 PM ) Total Marks: 1
Which of the following is correct property for joint probability distribution of X and Y:
Select correct option:
Sigma f(X,Y)=1
Sigma f(Y,X)=1
Both of above
MT060201146 : KAMRAN ELAHI
Quiz Start Time: 08:57 PM
Time Left 89
sec(s)
Question # 6 of 10 ( Start time: 09:01:58 PM ) Total Marks: 1
Which of the following is desirable for a good point estimator?
Select correct option:
Consistency
Unbiasedness
Efficiency
All of these
MT060201146 : KAMRAN ELAHI
Quiz Start Time: 08:57 PM
Time Left 88
sec(s)
Question # 7 of 10 ( Start time: 09:02:26 PM ) Total Marks: 1
The distribution function (df) is also known as
Select correct option:
Probability distribution
Probability mass function
Probability density function
Cumulative distribution function
MT060201146 : KAMRAN ELAHI
Quiz Start Time: 08:57 PM
Time Left 88
sec(s)
Question # 8 of 10 ( Start time: 09:02:52 PM ) Total Marks: 1
If X and Y are two discrete r.v’s with joint probability function f(x,y), then the conditional probability function Y given X, f(yx) is given by
Select correct option:
f(yj  xi) = f(xi, yj) / g( xi)
f(yj  xi) = f(xi, yj) / h( yj)
f(yj  xi) = f(xi, yj) / Sum of g( xi)
f(yj  xi) = f(xi, yj) / sum of h( yj)
MT060201146 : KAMRAN ELAHI
Quiz Start Time: 08:57 PM
Time Left 88
sec(s)
Question # 9 of 10 ( Start time: 09:03:25 PM ) Total Marks: 1
If the sample mean is an unbiased estimator for the population mean then:
Select correct option:
The sample mean has a normal distribution
The average sample mean, over all possible samples, equals the population mean
The sample mean is always very close to the population mean
The sample mean will only vary a little from the population mean
MT060201146 : KAMRAN ELAHI
Quiz Start Time: 08:57 PM
Time Left 88
sec(s)
Question # 10 of 10 ( Start time: 09:04:18 PM ) Total Marks: 1
Which of the probability distributions has three parameters?
Select correct option:
Binomial distribution
Normal distribution
Hypergeometric distribution
Poisson distribution
Quiz Conference: Quiz Start Time: 09:08 PM
Time Left 89
sec(s)
Question # 1 of 10 ( Start time: 09:08:48 PM ) Total Marks: 1
A standard deviation obtained from sampling distribution of sample statistics is known as
Select correct option:
Sampling error
Standard error
Minimum error
Universal error
Quiz Start Time: 09:08 PM
Time Left 89
sec(s)
Question # 2 of 10 ( Start time: 09:09:25 PM ) Total Marks: 1
A parameter is a ..... quantity.
Select correct option:
Constant
Variable
Sample
Random
Quiz Start Time: 09:08 PM
Time Left 86
sec(s)
Question # 3 of 10 ( Start time: 09:10:08 PM ) Total Marks: 1
How can you define statistical inference?
Select correct option:
A decision, estimate, prediction or generalization about the population based on information contained in a sample
A statement made about a sample based on the measurements in that sample
A set of data selected from a larger set of data
A decision, estimate, prediction or generalization about sample based on information contained in a population
Quiz Start Time: 09:08 PM
Time Left 89
sec(s)
Question # 4 of 10 ( Start time: 09:11:26 PM ) Total Marks: 1
Which of the following is most important and most widely used method in point estimation?
Select correct option:
The method of moments
The method of fractional moments
The method of leas square
The method of maximum likelihood
Quiz Start Time: 09:08 PM
Time Left 89
sec(s)
Question # 5 of 10 ( Start time: 09:12:45 PM ) Total Marks: 1
The location and shape of the normal curve is (are) determined by:
Select correct option:
Mean
Variance
Mean & variance
Mean & standard deviation
Quiz Start Time: 09:08 PM
Time Left 89
sec(s)
Question # 6 of 10 ( Start time: 09:13:28 PM ) Total Marks: 1
A discrete probability function f(x) is always:
Select correct option:
Zero
One
Negative
Nonnegative
Quiz Conference: Quiz Start Time: 09:08 PM
Time Left 89
sec(s)
Question # 7 of 10 ( Start time: 09:14:14 PM ) Total Marks: 1
Binomial distribution is skewed to the right if:
Select correct option:
p=q
P<q
p>q
p=n
Quiz Start Time: 09:08 PM
Time Left 89
sec(s)
Question # 8 of 10 ( Start time: 09:15:14 PM ) Total Marks: 1
In a discrete distribution function, F(23) can be stated as:
Select correct option:
P (there are at most 23 successes)
P (there are at least 23 successes)
P (there are less than 23 successes)
P (there are more than 23 successes)
Quiz Conference: Quiz Start Time: 09:08 PM
Time Left 88
sec(s)
Question # 9 of 10 ( Start time: 09:16:12 PM ) Total Marks: 1
The Probabilities of the various values of the sample satistic can be computed using the......... definition of probability.
Select correct option:
Subjective
Objective
Classical
None of the baove
Quiz Conference: Quiz Start Time: 09:08 PM
Time Left 89
sec(s)
Question # 10 of 10 ( Start time: 09:17:12 PM ) Total Marks: 1
E(10X +3) =_______
Select correct option:
10 E(X)
E(X)+3
10 E(X)+3
100E(X)
Quiz Conference: Quiz Start Time: 09:20 PM
Time Left 88
sec(s)
Question # 1 of 10 ( Start time: 09:20:04 PM ) Total Marks: 1
If p is very small and n is considerably large then we shall apply the:
Select correct option:
Binomial distribution
Hypergeometric distribution
Poisson distribution
Exponential distribution
Quiz Start Time: 09:20 PM
Time Left 89
sec(s)
Question # 2 of 10 ( Start time: 09:21:19 PM ) Total Marks: 1
Which of the following is NOT applicable to a Poisson distribution?
Select correct option:
IF P = 0.5 & n = 19
IF P = 0.01 & n = 200
IF P = 0.02 & n = 300
IF P = 0.03 & n = 500
Quiz Start Time: 09:20 PM
Time Left 89
sec(s)
Question # 3 of 10 ( Start time: 09:22:26 PM ) Total Marks: 1
The normal distribution has points of infection which are equidistance from the:
Select correct option:
Median
Mean
Mode
Mean,Median & Mode
Quiz Conference: Quiz Start Time: 09:20 PM
Time Left 89
sec(s)
Question # 4 of 10 ( Start time: 09:23:38 PM ) Total Marks: 1
The distribution function (df) is also known as
Select correct option:
Probability distribution
Probability mass function
Probability density function
Cumulative distribution function
Quiz Conference: Quiz Start Time: 09:20 PM
Time Left 88
sec(s)
Question # 5 of 10 ( Start time: 09:24:38 PM ) Total Marks: 1
Suppose 60% of a herd of cattle is infected with a particular disease. Let Y = the number of nondiseased cattle in a sample of size 5. the distribution of Y is:
Select correct option:
Binomial with n = 5 and p = 0.6
Binomial with n = 5 and p = 0.4
Binomial with n = 5 and p = 0.5
Poisson with u = .6
Quiz Conference: Quiz Start Time: 09:20 PM
Time Left 89
sec(s)
Question # 6 of 10 ( Start time: 09:25:57 PM ) Total Marks: 1
If a random variable X denotes the number of heads when we toss a fair coin 5 times, the X assumed the values:
Select correct option:
0,1,2,3
1, 2,3,4,5
0, 1, 2,3,4,5
1, 5, 5
Quiz Conference: Quiz Start Time: 09:20 PM
Time Left 88
sec(s)
Question # 7 of 10 ( Start time: 09:27:20 PM ) Total Marks: 1
If c is a constant, then E(c) = ___
Select correct option:
0
1
c
c
Quiz Start Time: 09:20 PM
Time Left 88
sec(s)
Question # 8 of 10 ( Start time: 09:27:57 PM ) Total Marks: 1
As a rule of thumb, when n>=30, then we can assume that………is normally distributed:
Select correct option:
Probability distribution
Sampling distribution
Binomial distribution
Sampling distribution of sample mean
Quiz Conference: Quiz Start Time: 09:20 PM
Time Left 89
sec(s)
Question # 9 of 10 ( Start time: 09:28:58 PM ) Total Marks: 1
If b(x, 7, 0.30), the variance of this distribution is:
Select correct option:
1.77
1.74
1.44
1.47
Quiz Start Time: 09:20 PM
Time Left 89
sec(s)
Question # 10 of 10 ( Start time: 09:30:19 PM ) Total Marks: 1
Which of the following is a characteristic of a binomial probability experiment?
Select correct option:
Each trial has more than two possible outcomes
P(success) = P(failure)
Probability of success changes for each trail
The result of one trial does not affect the probability of success on any other trial
s�hgX�H�o� boys) do not match with our behavior and we may lose our Iman, which is the most precious thing for a Muslim. At last, which I think is that men and women, girl and boys, should study alone, they should not interact with one another as it will pollute the environment in another way.
Question No: 20 (Marks: 10 )
Write an essay on any one of the given topics. It should comprise of 200230 words.
Abuse at home and domestic violence should be punished.
OR
Media violence has a negative effect.
Childhood is the age of getting and loosing habits. If a child, from the beginning starts hard work, he/she will become habitual of it, which will provide benefit to him/her in his/her whole life. Conversely, if a child becomes habitual of some ill mannered acts such as abusing at home he/she will suffer a lot in future. After all he/ she has to came out of home at some stage and when he entered in practical life what other people think about him. People will think that parents didn’t instruct their child and are careless.
Similarly in our homes, it is seen that people used to do violence even, between father and mother. Such a child which from childhood used to see these things will be greatly affected. The quarrel between the children at home is also very common. But if a child is not controlled, then he will become so habitual that he may do violence on others in practical life ,may be his friends, wife or any other.
So the point I want to clear is that, we should punish the child or anyone at home because, home is the first place from where the child get up things after mother’s lap. But do not punish so intently that the child may left the home or any other misdeed he did. If we will not do so, it will have big drawbacks in future for all
members of family.
STA301…..mcqs……..
In a multiplication theorem P (A and B) equals: 

Select correct option: 





The probability can never be: 

Select correct option: 





If two fair die are thrown, the probability of getting a double six is: 

Select correct option: 





If A and B are independent events with P(A) = 0.05 and P(B) = 0.65, then P(AB) = : 

Select correct option: 





Twenty percent of the students in a class of 100 are planning to go to graduate school. The standard deviation of this binomial distribution is: 

Select correct option: 





If f(x) is a continuous probability function, then P(X = 2) is: 

Select correct option: 





Probability of an impossible event is always: 

Select correct option: 





Question # 8 of 10 ( Start time: 01:38:25 PM ) 
Total Marks: 1 

E(4X + 5) =__________ 

Select correct option: 





The location and shape of the normal curve is (are) determined by: 

Select correct option: 





The probability of success changes from trial to trial, is the property of: 

Select correct option: 




1. A quantity obtained by applying certain rule or formula is known as
Select correct option:
Estimate
Estimator
2. Criteria to check a point estimator to be good involves
Select correct option:
Consistency
Unbiasedness
Efficiency
Above all pg 258
3. The Fdistribution always ranges from:
Select correct option:
0 to 1
0 to 8
8 to +8
0 to +8
4. 1a is the probability of ......
Select correct option:
Type 1 error
Rejection region
Acceptance region
Type 2 error
5. Parameter is a ………quantity.
Select correct option:
Constant
Variable
6. To find the estimate of a parameter…….methods are used.
Select correct option:
Two
Three
Four
Many
7. A failing student is passed by an examiner. It is an example of:
Select correct option:
Type I error
Type II error
Correct decision
No information regarding student exams
8. For two mutually exclusive events A and B, P (A) = 0.2 and P (B) = 0.4, then P(AUB) is:
Select correct option:
0.8
0.2
0.6
0.5
P(AUB)=P(A)+p(B)=0.2+0.4=0.6
9. An urn contains 4 red balls and 6 green balls. A sample of 4 balls is selected from the urn
without replacement. It is the example of:
Select correct option:
Binomial distribution
Hypergrometric distribution
Poisson distribution
Exponential distribution
10. A standard deck of 52 cards is shuffled. What is the probability of choosing the 5 of diamonds:
Select correct option:
1/5
1/13
1/52
11. If P(AnB) = 0.12 P (A) = 0.3, find P (B) where ‘A’ and ‘B’ are independent:
Select correct option:
0.1
0.2
0.3
0.4
0.3X0.4=0.12
12. The mean deviation of the normal distribution is approximately:
Select correct option:
7/8 of the S.D
4/5 of the S.D
3/4 of the S.D
1/2 of the S.D
13. We use the Poisson approximation to the binomial when:
Select correct option:
p is 0.01 or less & n is 10 or more
p is 0.05 or less & n is 20 or more pg221
p is 0.04 or less & n is 15 or more
p is 0.02 or less & n is 10 or more
14. The conditional probability P (A\B) is:
Select correct option:
P(A n B)/P(B) pg157
P(A n B)/P(A)
P(A U B)/P(B)
P(A U B)/P(A)
15. We use the General Rule of Multiplication to combine:
Select correct option:
Events those are not independent
Mutually exclusive events
Events that total more than 1.00
Events based on subjective probabilities
16. Which statement is NOT CORRECT?
Select correct option:
The sample standard deviation measures variability of our sample values
A larger sample will give answers that vary less from the true value than smaller samples
The sampling distribution describes how our estimate (answer) will vary if a new sample is taken
A large sample size always gives unbiased estimators regardless of how the sample is chosen
17. Probability of an impossible event is always:
Select correct option:
Less than one
Greater than one
Between one and zero
Zero
18. The number of parameters in uniform distribution is (are):
Select correct option:
12
pg 224
34
19. The probability can never be:
Select correct option:
1 1/2
1 
1/2
20. The conditional probability P (A\B) is:
Select correct option:
P(A n B)/P(B)
P(A n B)/P(A)
P(A U B)/P(B)
P(A U B)/P(A)
21. A random sample of n=25 values gives sample mean 83. Can this sample be regarded as drawn
from a normal population with μ= 80 and s= 7? In this question the alternative hypothesis will
be:
Select correct option:
H1: μ = 80
H1: μ ? 80
H1: μ > 80
H1: μ <80 pg 278
22. If f(x) is a continuous probability function, then P(X = 2) is:
Select correct option:
10 1/2
2
23. The binomial distribution is negatively skewed when:
Select correct option:
p>q pg 214
p<q
p=q
p=q=1/2
24. If we roll three fair dices then the total number of outcomes is:
Select correct option:
6 36
216
1296
6^3=216
25. When we draw the sample with replacement, the probability distribution to be used is:
Select correct option:
Binomial
Hypergeometric
Binomial & hypergeometric pg 219
Poisson
26. The moment ratios of normal distribution come out to be:
Select correct option:
0 and 1
0 and 2
0 and 3 pg 226
0 and 4
27. The probability of an event is always:
Select correct option:
less than 1
between o and 1
greater than 1
28. Symbolically, a conditional probability is:
Select correct option:
P(AB)
P(A/B)
P(A)
P(AUB)
29. Suppose the test scores of 600 students are normally distributed with a mean of 76 and
standard deviation of 8. The number of students scoring between 70 and 82 is:
Select correct option:
272
164
260
328
30. If P (A) = 0.3 and P (B) = 0.5, find P (A/B) where ‘A’ and ‘B’ are independent:
Select correct option:
0.3
0.5
0.8
0.15
31. An urn contains 4 red balls and 6 green balls. A sample of 4 balls is selected from the urn
without replacement. It is the example of:
Select correct option:
Binomial distribution
Hypergrometric distribution
Poisson distribution
Exponential distribution
32. If the second moment ratio is less than 3 the distribution will be:
Select correct option:
Mesokurtic
Leptokurtic
Platykurtic pg 226
None of these
33. For the independent events A and B if P (A) = 0.25, P (B) =0.40 then P (A and B) =……
Select correct option:
0.65
0.1
0.50
0.15
P(A)*P(B)0.25*0.40=0.1
34. A set of possible values that a random variable can assume and their associated probabilities of
occurrence are referred to as __________.
Select correct option:
Probability distribution
The expected return
The standard deviation
Coefficient of variation
35. A random variable X has a probability distribution as follows: X  0 1 2 3 P(X)  2k 3k 13k 2k
What is the possible value of k:
Select correct option:
0.01
0.03
0.05
0.07
36. The probability of drawing any one spade card is:
Select correct option:
1/52
4/52
13/52
52/52
37. The function abbreviated to d.f. is also called the......
Select correct option:
Probability density function
Probability distribution function pg 172
Commutative distribution function
Discrete function
38. Binomial distribution is skewed to the right if:
Select correct option:
p=q
P<q
p>q
p=n
39. A discrete probability function f(x) is always:
Select correct option:
Zero
One pg 172
Negative
Nonnegative
40. For a binomial distribution, n= 10 & q= 0.6, the mean of the distribution is:
Select correct option:
0.6
6.0
10
4
P=1q
10.6=0.4,
mean =np10*0.4=4
41. In the FA examination, 24candidates offered Statistics. If the probability of passing the subject
be 1/3, what will be the mean of the distribution?
Select correct option:
7865
42. The probability that a certain machine will produce a defective item is 1/4. If a random sample
of 6 items is taken from the output of this machine, what is the probability that there will be 5
or more defectives in the sample?
Select correct option:
3/4096
18/4096
19/4096
4/4096
43. Probability of type II error is
Select correct option:
a
B pg 276
1a
1B
44. If the values of variables are increasing or decreasing in the same direction then such kind of
correlation is referred as
Select correct option:
Zero Correlation
Perfect Correlation
Positive Correlation
Negative Correlation
45. The moving averages of the Prices 55,60,65,70 are
Select correct option:
70, 75
60, 65
65,65
70,60
46. The best measure of variation is
Select correct option:
Range
Quartile deviation
Variance
Coefficient of variance
47. Ms. Christian calculated a correlation coefficient of .75. Which of the following reflects the
best interpretation of this?
Select correct option:
Weak negative.
Strong negative.
Weak positive.
Strong positive.
48. ………use the division of a circle into different sectors. Select correct option:
Line graph
Sector graphs
Frequency Polygon
Conversion Graphs
49. The measurement of measure of degree of to which any two variables vary together is called
Select correct option:
Regression Coefficient
Correlation
Both (a) and (b)
None of these
50. Analysis of Variance (ANOVA) is a test for equality of:
Select correct option:
variances
means
proportions
only two parameters
51. For some data you are given Maximum value = 96 , Minimum Value = 23 , Range = 73,
number of classes selected between 5 and 15 Then class width will be Select correct option:
15
85
All options 1,2 ,3 are possible
52. If strength of the association between X and Y is very weak, then r = ? Select correct option:
r =  1
r = 0
r = 1
r = 2
53. The moving averages of the Prices 90,70,30,110 are Select correct option:
63.33, 70
73.33, 80
45.45, 68
65.50, 75
54. With increase in sample size, distribution tends to be a.......
Select correct option:
Meso kurtic
Normal
Bell shaped
Above all
55. In the central tendency Mean, Median and Mode
Select correct option:
Mean is better than Median
Median is better than Mode
Mean is better than Mode
All of these are true
56. The degree to which numerical data tend to spread about an average is called
Select correct option:
The dispersion
Standard deviation
Correlation
None of these
57. …………..graphs are similar to bar graphs.
Select correct option:
column
line
conversion
sector
58. A pattern of variation of a time series that repeats every year is called:
Select correct option:
Cyclical
Seasonal
Trend
Secular
59. In the central tendency Mean, Median and Mode
Select correct option:
Mean is better than Median
Median is better than Mode
Mean is better than Mode
All of these are true
60. The degree to which numerical data tend to spread about an average is called
Select correct option:
The dispersion
Standard deviation
Correlation
None of these
61. …………..graphs are similar to bar graphs.
Select correct option:
column
line
conversion
sector
62. A pattern of variation of a time series that repeats every year is called:
Select correct option:
Cyclical
Seasonal
Trend
Secular
63. You have measured the systolic blood pressure of a random sample of 22 employees of a
company. A 95% con?dence interval for the mean systolic blood pressure for the employees is
computed to be (120,138). Which of the following statements gives a valid interpretation of this
interval?
Select correct option:
About 95% of the sample of employees has a systoli
About 95% of the employees in the company have a
If the sampling procedure were repeated many times
If the sampling procedure were repeated many times
64. Assume that a population consists of 7 similar containers having the following weights (km):
9.8, 10.2, 10.4, 9.8, 10.0, 10.2, 9.6 What is the second moment about mean?
Select correct option:
0.262 kg
0.069kg
0.521 kg
0.313kg
65. How many numbers of parameter(s) are in tdistribution?
Select correct option:
0
1 pg 292
2
3
66. With increase in sample size, distribution tends to be a.......
Select correct option:
Meso kurtic
Normal
Bell shaped
Above all
67. Fdistribution is a…………….. distribution.
Select correct option:
Unimodel pg 312
Bimodal
Discrete
Negatively skewed
68. Which one of the following sampling methods would give unbiased results, if you need to find
out the number of people in your town liking vanilla or chocolate ice creams?
Select correct option:
Ask my neighbors
Randomly select a few ice cream shops in town, and
Ask my friends
Ask my classmates
69. A standard deviation obtained from sampling distribution of sample statistics is known as
Select correct option:
Sampling Error
Standard error pg 240
70. If the regression line: Y= 3+5X meets yaxis at ‘8’ units distance from origin then the value of
xintercept is
Select correct option:
(3/5)
3/5
11/5
1
71. Sum of three terms whose mean is equal to 90 is
Select correct option:
270
30
Also 90
None of these
72. FREQUENCY Function calculates how often values occur within a range of values.
Select correct option:
true
False
73. Which of the following correlation coefficients represents the weakest correlation between two
variables?
Select correct option:
0.15
0.15
0.02
1.00
74. If the value of r is 0.8 ,then the coefficient of determination is
Select correct option:
67%
64%
80%
75%
75. If the dependent variable increases with the independent variable then the coefficient of
correlation is
Select correct option:
0 to 1
0 to – 0.5
0 to 2
0 to 1
76. F distribution tends to normality, if
Select correct option:
V1~8
V2~8
V1 and V2 ~8
Sample size is large
77. Consistency of an estimator can be checked by comparing
Select correct option:
Mean
MSE
Variance
Standard deviation
78. A standardized estimate has mean and variance
Select correct option:
(1, 0)
(0, 1)
(μ, s2)
(μ, s)
79. A composite hypothesis comprises of ………
Select correct option:
Equality
Not equal to
Less than/greater
(b) and (c)
80. For a particular hypothesis test, a=0.05and B=0.05. The power of test is equal to:
Select correct option:
0.14
0.90
0.95
0.25
81. In a tdistribution
Select correct option:
Mean=median=mode
Mean>Median<Mode
Median >Mean>Mode
Media<Mode<Mean
82. If we reject the null hypothesis, we might be making
Select correct option:
Type I error
Type II error
A correct decision
Unpredictable
83. The Central Limit Theorem is important in Statistics because it allows us to use the normal
distribution to make inferences concerning the population mean:
Select correct option:
Provided that the population is normally distributed a
Provided that the population is normally distributed (
Provided that the sample size is reasonably large (fo
Provided that the population is normally distributed and the population variance is known (for
any sample size)
84. Herbicide A has been used for years in order to kill a particular type of weed, but an
experiment is to
be conducted in order to see whether a new herbicide, Herbicide B, is more effective than
Herbicide A.
Herbicide A will continue to be used unless there is sufficient evidence that Herbicide B is more
effective.
The alternative hypothesis in this problem is that
Select correct option:
Herbicide A is more effective than Herbicide B
Herbicide B is more effective than Herbicide A
Herbicide A is not more effective than Herbicide B
Herbicide B is not more effective than Herbicide A
85. A data in which we study about Regions is called……
Select correct option:
Qualitative
Quantitative
Geographical
Chronological
86. If the median of an arrangement of numbers is equal to the mean of its middle terms then the
arrangement contains
Select correct option:
Odd number of terms
Even number of terms
Unlimited number of terms
Prime number
87. If the graph is very much scattered, then what can be the suitable value of r?
Select correct option:
r =  0.9
r = 0.5
r = 0.1
r=0.8
88. In scatter diagram, clustering of points around a straight line indicates
Select correct option:
Linear regression
Nonlinear regression
Curvilinear linear regression
Both a and b
89. If the standard deviation of a population is 9, the population variance is
Select correct option:
39 21.35
81
90. How many steps are involved in general procedure for testing hypothesis:
4567 91. When testing for independence in a
contingency table with 2
rows and 5
columns, there are
________ degrees of freedom.
4
10
75 r1*c1
21*51=4
92. The critical region is in:
The middle of a distribution
The tails of a distribution
Either the middle or the tails of a distribution
Neither the middle nor the tails of a distribution
93. tdistribution is used to test the hypothesis about.....
Mean
proportion
The term 1B is called
Level of the test
power of the test
Size of the test
Critical region
94. The asymptotic distribution of tstatistic with ndegree of freedom is
F
Normal
Z T
95. The Gallup Poll has decided to increase the size of its random sample of Canadian voters from
about 1200 people to about 4000 people. The e?ect of this increase is to:
Reduce the bias of the estimate
Increase the standard error of the estimate
Reduce the variability of the estimate
Increase the con?dence interval width for the parameter
96. The value of chi square can never be :
Zero
Less then 1
Greater then 1
Negative
97. The curve of the F distribution depends upon:
Mean
Variance
Standard Deviation
Sample Size
98. We want to test H0 : μ = 1.5 vs. H1 : μ 6= 1.5 at _= .05 . A 95% confidence interval for μ
calculated from a given random sample is (1.4, 3.6)Based on this finding we:
Fail to reject H0
Reject H0
Cannot make any decision at all because the value of the test statistic is not available
Cannot make any decision at all because (1.4, 3.6) is only a 95%
99. When we want to test the equality of two variances we usually use
Ftest
Chisquare test
ANOVA
Z_test
100. To find the estimate of a parameter…….methods are used.
Two
Three
Four
Many
101. In testing hypothesis, we always begin it with assuming that:
Null hypothesis is true
Alternative hypothesis is true
Sample size is large
Population is normal
102. tdistribtion is applicable in case of
Independent samples
Dependent samples
Both (a) and (b)
Normal populations
103. When testing for independence in a contingency table with 3 rows and 4 columns, there are
________ degrees of freedom.
567 12
104. The Chi Square distribution is continuous distribution ranging from:
0 = ?2= 8
8 =?2 =0
8 =?2 =1
8 = ?2= 8
105. The location of the critical region depends upon:
Null hypothesis
Alternative hypothesis
Value of alpha
Value of teststatistic
106. A random sample of n = 6 has the elements 6, 10,13,14,18 and 20.What is the point
estimate of the population mean?
12
13.5
11
11.5
107. ML estimators may not ………
Consistent
Efficient
Unbiased
Bised
108. Which of the following reveals the weakest fact.
Select correct option:
The measure of central tendency measures that value which depends only on the extreme values
The measure of central tendency measures that value in tha data which occurs in the data most frequent
times.
The measure of central tendency measures the value which has tendency to lie in the central part of the
data.
109. The measure of central tendency measures the distance of values from means
Frequency polygon is …………
Select correct option:
Bar Charts
A line graph
Pareto Chats
None of these
110. A bar graph uses ……to show data.
Select correct option:
Points
Bars
Lines
Pictures
111. Geographical data deals with…
Select correct option:
Religion
Height
Income
Regions
112. Which one provides the basis for hypothesis testing?
Null hypothesis
Alternative hypothesis
Critical value
Teststatistics
113. The test statistic to test the U1 = U2 (U represent the mean of population)for normal
population for n>30.
Ftest
Ztest
Ttest
ChiSquare test
114. In a tdistribution
Mean=median=mode
Mean>Median<Mode
Median >Mean>Mode
Media<Mode<Mean
115. 1a is the probability of ......
Type 1 error
Rejection region
Acceptance region
Type 2 error
116. Inferential statistics involves …….
Testing
Confidence interval
Estimation
Above all
117. Probability of type II error is
a
B 1a
1B
118. if the equation of regression line is y = 5, then what result will you take out from it?
Select correct option:
The line passes through origin.
The line passes through (5, 0)
The line is parallel to yaxis.
The line is parallel to xaxis.
119. If the estimating equation is Y = a – b X ,Which of the following is true
Select correct option:
a)The y intercept is’b’
b) Slope of line is negative
c) There is inverse relationship
d) b & c
120. The variance of tdistribution, for v >2, is always:
Select correct option:
Greater than zero
Less than one
Equal to one
Greater than one
121. Alpha is the probability of ......
Select correct option:
Rejecting H0
Accepting H0
Rejecting H1
Accepting H1
122. What type of data is collected in population census?
Select correct option:
Two Types
123. The collection of all outcomes for an experiment is called
Select correct option:
a sample space
the intersection of events
joint probability
population
124. Which of the graph is used for a time series data:
Select correct option:
Frequency curve
Frequency polygon
Historigram
Histogram
125. A histogram is consists of a set of adjacent rectangles whose bases are marked off by:
Select correct option:
Class boundaries
Class limits
Class frequency
Class marks
126. The value that has half of the observations above it and half the observations below it is
known as:
Select correct option:
Mean
Median
Mode
Standard deviation
127. The height of a student is 60 inches. This is an example of ...........?
Select correct option:
Continuous data
Qualitative data
Categorical data
Discrete data
128. Range of the values 2,3,4,3,9,2,8,1,0 is
Select correct option:
0
9
89
09=9
129. If the both tails of the distribution are equal, then distribution is called:
Select correct option:
Jshaped
Symmetrical
Positively Skewed
Negatively Skewed
130. Ranking scale also include the properties of which scale?
Select correct option:
Nominal scale
Interval scale
Ratio scale
All of these
131. Range of the values 2.50,3.70,4.80,3.10,9.70,2.20,8.90,1.60, 0.60 is
Select correct option:
10.03
10.30
9.10
9.00
0.60+9.70=10.30
132. What is/are the mode for the following data: 1,m,d,n,,2,d,2,d,s,5,5,7
Select correct option:
2
d5 2,d,5
133. If the standard deviation of a population is 5.5, the population variance is:
Select correct option:
5.5
31
25
30.25
134. What we commonly called a bell shaped distribution:
Select correct option:
syme
bi moder
u shap
skewed
135. The beginnings of a cumulative frequency distribution are presented below. What is the
next number in the Cumulative Frequency column? Classes Frequency Cumulative Frequency
6.1 to 8 1 1 8.1 to 10 2 10.1 to 12 3
Select correct option:
0
123
136. Range of the values 10, 19, 9, 15, 28, 26, 25 is:
Select correct option:
+18
18
19
+19
137. Which one of the following is less than median for a symmetrical distribution:
Select correct option:
50percentile
51 percentile
2quartile
4decile
138. The value of the middle term in a ranked (ordered) data set is called the
Select correct option:
mode
mean
median
harmonic mean
139. Sum of absolute deviations of the values is least when deviations are taken from
Select correct option:
mean
median
mode
g.m
140. Statistic is a numerical quantity, which is calculated from
Select correct option:
data
observation
sample
population
141. The branch of Statistics that is concerned with the procedures and methodology for
obtaining valid conclusions is called:
Select correct option:
descriptive
advance
infernetial
sample
142. How to find the class midpoint?
Select correct option:
Half the sum of upper class limit and lower class limit
Find the difference between consecutive lower limits
Count the number of observations in the class
Divide the class frequency by the number of observ
143. For given data, discuss the shape of the distribution: X f 0.2 8 1.2 15 2.2 23 3.2 40
Select correct option:
Positively skewed
Negatively skewed
Symmetric curve
U Shaped curve
144. Data classified by attributes are called:
Select correct option:
group
qulitative
quantitive
array
if ‘2’ is a leading digit in 24335, than what are the trailing digits in the observation to
display a ‘Stemand –Leaf display’.
Select correct option:
4 335
4335
43
145. A frequency polygon is obtained by plotting the class frequencies against what?
Select correct option:
classbounday
cumulative frequency
relative frequency
mid point
146. When more values are lying at the start of the distribution, it is:
Select correct option:
u shape
positive
negative
symmetrica
147. The data for an ogive is found in which distribution:
Select correct option:
A cumulative frequency distribution
A joint frequency distribution
A frequency distribution
A relative frequency distribution
148. Which one of the following is greater than median for a symmetrical distribution:
Select correct option:
1st Decile
7th Decile
44th Percentile
14th Percentile
149. Statistics deals with
Select correct option:
Individuals
Isolated items
Isolated items
Aggregates of facts
150. Data classified by attributes are called:
Select correct option:
Grouped data
Qualitative data
Quantitative data
Arrayed data
151. As a general rule, statisticians tends to use which of the following number of classes when
arranging the data
Select correct option:
Fewer than 5
Between 5 & 20
Between 8 & 15
More than 20
152. The collection of all outcomes for an experiment is called
Select correct option:
a sample space
the intersection of events
joint probability
population
153. If P (E) is the probability that an event will occur, which of the following must be false:
Select correct option:
P(E)=  1
P(E)=1
P(E)=1/2
P(E)=1/3
154. If we roll a die then probability of getting a ‘2’ will be
Select correct option:
2/6
1/6
4/6
1
155. In a multiplication theorem P (A n B) equals:
Select correct option:
P (A) P (B)
P (A) + P (B)
P (A) * P (BA) pg 158
P(B\A)*P(B)
156. If Y=3X+5,then S.D of Y is equal to
Select correct option:
9 s.d(x)
3 s.d(x)
s.d(x)+5
3s.d(x)+5
157. In regression line Y=a+bX, X is called:
Select correct option:
Dependent variable
Independent variable
Explained variable
Regressand
158. Symbolically, a marginal probability is:
Select correct option:
P(AB)
P(AUB)
P(A/B)
P(A)
159. Which formula represents the probability of the complement of event A:
Select correct option:
1 + P (A)
1  P (A)
P (A)
P (A) 1
160. If A and B are independent events with P(A) = 0.05 and P(B) = 0.65, then P(AB) = :
Select correct option:
0.65
0.05
0.03
0.07 not sure
161. The probability of drawing a ‘white’ ball from a bag containing 4 red, 8 black and 3 white
balls is:
Select correct option:
0 3/15
1/12
1/2
Total ball= 4+8+3=15
P=3/15
162. An expected value of a random variable is equal to:
Select correct option:
Variance
Mean
Standard deviation
Quartile
163. When we toss a fair coin 4 times, the sample space consists of….points.
Select correct option:
48 12
16
164. 5C5=
Select correct option:
51 10
25
165. In a probability distribution, the sum of the probabilities is equal to:
Select correct option:
0 0.1
0.5
1
166. The simultaneous occurrence of two events is called:
Select correct option:
Joint probability
Subjective probability
Prior probability
Conditional probability
167. Let E and F be events associated with the same experiment. Suppose the E and F are
independent and that P(E) = 1/4 and P(F) = 1/2 Then P(E U F) is:
Select correct option:
1/8
3/4
7/8
5/8
¼+1/2=3/4
tanksssss ♥
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