STA301 Quiz No. 1 Solution & Discussion Due Date: Nov 27, 2014

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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.

 

•        You can start attempting the quiz any time within given date(s) and time of a particular subject by clicking the link for Quiz in LMS.

 

•         Each question has a fixed time of 90 seconds. So you have to save your answer before 90 seconds. But due to unstable internet speeds, it is recommended that you should save your answer within 60 seconds. While attempting a question, keep an eye on the remaining time.

 

•         Attempting quiz is unidirectional. Once you move forward to the next question, you can not go back to the previous one. Therefore before moving to the next question, make sure that you have selected the best option.

 

•         DO NOT press back button while attempting a question; otherwise you will lose a question.

 

•         DO NOT refresh the page unnecessarily.

 

•         DO NOT try to disable “JavaScript” in your browser; otherwise you will not be able to attempt the quiz.

 

•         If for any reason, you lose access to internet (like power failure or disconnection of internet); you will be able to attempt the quiz again from the position where you left in last attempt. But remember that you have to complete the quiz before expiry of the deadline.

 

• It is advised that for rough work keep a paper and pencil with you.

 

• You may use calculator for finding the correct solution among options.

[+ M.Tariq Malik]

Please all students related this subject Share your online Quizzes here to help each other.thanks

 

Please share the question and their answers of this quiz if anyone has done.
Thanks. 

[+ M.Tariq Malik]

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

[+ M.Tariq Malik]

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

[maria naveed]

sum of derivatin is maximam

G.M will be undefined

[+ M.Tariq Malik]

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

 

[Abdullah Jarrar MCS]

thnx 

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Data used by an agency which is originally collected by them is called:

• Primary data
• Ungroup data
• Secondary data
• Grouped data

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The extremely positive skewed curve is also known as:

• Frequency curve
• U-shaped curve
• J-shaped curve
• Reverse J-shaped curve

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When population units are drawn into sample by using one’s personal judgment, it is called:

• Random sampling
• None random sampling
• Systematic sampling
• Stratified sampling

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Which method is used for obtaining the relative frequencies?

• Dividing the mid points by the frequency
• Dividing the mid points by the total frequency
• Dividing the frequency by the total frequency
• Dividing the total frequency by the frequency

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Which of the following comes first to make frequency distribution:

• No. of Groups
• Class interval
• Range
• Tally marks

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A distribution having two modes is called:

• Uni-modal distribution
• Bi-modal distribution
• Tri-modal distribution
• Multimodal distribution