# Statistics MCQ Questions for Class 11 Math’s Chapter 15 with Answers

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(i) 81
(ii) 57
(iii) 36
(iv) 25

(i) 81

(i) 2
(ii) 3
(iii) 4
(iv) 5

(ii) 3

## Q3. Which one is measure of dispersion method

(i) Renge
(ii) Quartile deviation
(iii) Mean deviation
(iv) all of the above

(iv) all of the above

(i) 30.0
(ii) 30.1
(iii) 30.2
(iv) 30.3

(ii) 30.1

(i) 16
(ii) 20
(iii) 25
(iv) 30

(ii) 20

(i) 20
(ii) 19
(iii) 21
(iv) 22

(iii) 21

(i) 8.6
(ii) 6.4
(iii) 10.6
(iv) 9.6

(i) 8.6

(i) 4
(ii) 5
(iii) 6
(iv) 7

(iv) 7

(i) 5
(ii) 4
(iii) 9
(iv) 10

(iii) 9

## Q10. The coefficient of variation is computed by

(i) S.D/.Mean×100
(ii) S.D./Mean
(iii) Mean./S.D×100
(iv) Mean/S.D.

(ii) S.D./Mean

(i) 20
(ii) 40
(iii) 50
(iv) 60

(ii) 40

(i) 2.82
(ii) 2.4
(iii) 2.7
(iv) 2.5

(i) 2.82

## Q13. The co-efficient of variation is computed by:

(i) mean/ standard deviation
(ii) standard deviation /mean
(iii) mean /standard deviation x 100
(iv) standard deviation / mean x 100

(iv) standard deviation / mean x 100

(i) 16
(ii) 20
(iii) 25
(iv) 30

(ii) 20

## Q15. Consider the first 10 positive integers. If we multiply each number by –1 and then add 1 to each number, the variance of the numbers so obtained is

(i) 8.25
(ii) 6.5
(iii) 3.87
(iv) 2.87

(i) 8.25

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