MCQ Quiz on Class 11 Maths Chapter 15 Statistics with Answers

We have compiled the MCQ Questions for Class 11 Maths Chapter 15 Statistics with Answers Pdf free download covering the entire syllabus for JEE and Boards. Practice MCQ Questions for Class 11 Maths with Answers on a daily basis and score well in exams. Refer to Statistics Class 11 MCQs Quiz Questions with Answers here along with a detailed explanation.

Statistics Class 11 MCQs Questions with Answers

MCQ Questions for Class 11 Maths Chapter 15 Statistics with Answers

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1. If covariance between two variables is 0, then the correlation coefficient between them is

 
 
 
 

2. If the mean of first n natural numbers is 5n/9, then n =

 
 
 
 

3. If the mean of the following data is 20.6, then the value of p is
x = 10  15   p   25  35
f =   3   10  25   7    5

 
 
 
 

4. If one of the observation is zero then geometric mean is

 
 
 
 

5. If a variable takes discrete values x + 4, x – 7/2, x – 5/2, x – 3, x – 2, x + 1/2, x – 1/2, x + 5 (x > 0), then the median is

 
 
 
 

6. Varience is independent of change of

 
 
 
 

7.  The two lines of regression are 2x – 7y + 6 = 0 and 7x – 2y +1 = 0. What is correlation coefficient between x and y ?

 
 
 
 

8. The coefficient of correlation r satisfies

 
 
 
 

9. The mean of 5 observations is 4.4 and their variance is 8.24. If three observations are 1,2 and 6, the other two observations are

 
 
 
 

10. Let x1, x2, x3, ……… , xn, be n observations and X be the arithmetic mean. Then formula for the standard deviation is given by

 
 
 
 

11. The mean of a group of 100 observations was found to be 20. Later on, it was found that three observations were incorrect, which was recorded as 21, 21 and 18. Then the mean if the incorrect observations are omitted is

 
 
 
 

12. The mean weight of a group of 10 items is 28 and that of another group of n items is 35.The mean of combined group of 10 + n items is found to be 30. The value of n is

 
 
 
 

13.  For a moderately skewed distribution, quartile deviation and the standard deviation are related by

 
 
 
 

14. If the varience of the data is 121 then the standard deviation of the data is

 
 
 
 

15. Which one is measure of dispersion method

 
 
 
 

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