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STA301 Quiz No. 1 Solution & Discussion Due Date: Nov 27, 2014
STA301 Statistics and Probability Quiz No. 1 Solution Fall 2014 Close Date Nov 27, 2014
You are informed that your previous Quiz no.1 has been canceled and it is re-scheduled as follows:
Opening Date and Time of Quiz Nov. 25, 2014
Closing Date and Time of Quiz Nov.28, 2014
Instructions:
Read the following instructions carefully before attempting the Quiz No.1.
• Quiz will be based upon Multiple Choice Questions (MCQs) and it will cover Lesson nos. 01 to Lesson nos.09.
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• You may use calculator for finding the correct solution among options.
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Dear Students:
Both Quizzes are open now. The students have to follow this mode:
Quiz Expiry date Attempt
Quiz No. 1 26/11/2014 those students who missed it due to time problem, should attempt it
Quiz No. 1 27/11/2014 every student has to attempt
Question # 1 of 10 ( Start time: 07:27:06 PM ) Total Marks: 1
Dividing mean deviation by mean we get a pure number known as
Select correct option:
Co-efficient of mean deviation*(ans)
Co-efficient
Co-efficient of quartile deviation
None of the above
Question # 2 of 10 ( Start time: 07:28:06 PM ) Total Marks: 1
Formula for Semi Interquartile Range is:
Select correct option:
(Q3-Q1)/2*(ans)
(Q1+Q3)/2
(Q1-Q3)
(Q1+Q3)
Question # 3 of 10 ( Start time: 07:29:25 PM ) Total Marks: 1
Which scale will you use to measure the temperature?
Select correct option:
Nominal scale
Interval scale*(ans)
Ratio scale
Ordinal scale
Question # 4 of 10 ( Start time: 07:30:57 PM ) Total Marks: 1
If Xo is the smallest value and Xm is the largest value in a data set then, range is defined by the relation:
Select correct option:
Xo
Xm
Xm-Xo*(ans)
Xo-Xm
Question # 5 of 10 ( Start time: 07:32:14 PM ) Total Marks: 1
Half of the observations are always larger than:
Select correct option:
Mean*(ans)
Median
Mode
Total
Question # 6 of 10 ( Start time: 07:32:55 PM ) Total Marks: 1
The difference between estimated value and the population value is called
Select correct option:
Sampling Error
Non Random Error
Non Sampling Error
Random Error*(ans)
Question # 7 of 10 ( Start time: 07:34:23 PM ) Total Marks: 1
The sum of squared deviations from mean is:
Select correct option:
Maximum
Minimum
Zero*(ans)
Undefined
Question # 8 of 10 ( Start time: 07:35:01 PM ) Total Marks: 1
For the given data 20, 13, 27, 0, -8 G. M will be:
Select correct option:
Negative*(ans)
Positive
Zero
Undefined
Question # 9 of 10 ( Start time: 07:36:02 PM ) Total Marks: 1
What is the median for the following data: 1,1,2,2,5,5,7,7,7
Select correct option:
1
2
5*(ans)
7
When the deviations (excesses and defects) from the true value tend to occur equally, it is called:
Select correct option:
Unbiased error*(ans)
Biased error
Systematic error
Mistake
sum of derivatin is maximam
G.M will be undefined
STA301 Statistics and Probability Quiz No. 1 Solution Fall 2014
If Y=bX, then variance of Y is
Select correct option:
b*2 var(x)
var(x)
b var(x)
b square root var(x) = Correct Choice
If f(x) is a continuous probability function, then P(X = 2) is:
Select correct option:
1
0
1/2
2 = Correct Choice
In regression line Y=a+bX, Y is called:
Select correct option:
Dependent variable = Correct Choice
Independent variable
Explanatory variable
Regressor
If A and B are mutually exclusive events with P (A) =0.25 and P (B) = 0.50, Then P (A or B) =………
Select correct option:
0.25
0.75 = Correct Choice
0.50
1
Symbolically, a conditional probability is:
Select correct option:
P(AB)
P(A/B) = Correct Choice
P(A)
P(AUB)
In a 52 well shuffled pack of 52 playing cards, the probability of drawing any one diamond card is
Select correct option:
1/52
4/52
13/52 = Correct Choice
52/52
Probability of a sure event is
Select correct option:
8
1 = Correct Choice
0
0.5
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 = Correct Choice
The probability of drawing a red queen card from well-shuffled pack of 52 playing cards is
Select correct option:
4/52
2/52 = Correct Choice
13/52
26/52
If P (B|A) = 0.25 and P (A and B) =0.20, then P (A) is
Select correct option:
0.05
0.80 = Correct Choice
0.95
0.75
Dividing mean deviation by mean we get a pure number known as
Select correct option:
Co-efficient of mean deviation = Correct Choice
Co-efficient
Co-efficient of quartile deviation
None of the above
Formula for Semi Interquartile Range is:
Select correct option:
(Q3-Q1)/2 = Correct Choice
(Q1+Q3)/2
(Q1-Q3)
(Q1+Q3)
Which scale will you use to measure the temperature?
Select correct option:
Nominal scale
Interval scale = Correct Choice
Ratio scale
Ordinal scale
If Xo is the smallest value and Xm is the largest value in a data set then, range is defined by the relation:
Select correct option:
Xo
Xm
Xm-Xo = Correct Choice
Xo-Xm
Half of the observations are always larger than:
Select correct option:
Mean = Correct Choice
Median
Mode
Total
The difference between estimated value and the population value is called
Select correct option:
Sampling Error
Non Random Error
Non Sampling Error
Random Error = Correct Choice
The sum of squared deviations from mean is:
Select correct option:
Maximum
Minimum
Zero = Correct Choice
Undefined
For the given data 20, 13, 27, 0, -8 G. M will be:
Select correct option:
Negative = Correct Choice
Positive
Zero
Undefined
What is the median for the following data: 1,1,2,2,5,5,7,7,7
Select correct option:
1
2
5 = Correct Choice
7
When the deviations (excesses and defects) from the true value tend to occur equally, it is called:
Select correct option:
Unbiased error = Correct Choice
Biased error
Systematic error
Mistake
thnx
Data used by an agency which is originally collected by them is called:
The extremely positive skewed curve is also known as:
When population units are drawn into sample by using one’s personal judgment, it is called:
Which method is used for obtaining the relative frequencies?
Which of the following comes first to make frequency distribution:
A distribution having two modes is called:
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