NDA Mathematics 4 September 2022 | NDA Year Wise Previous Years Questions

Mathematics

NDA Mathematics 4 September 2022

MCQ (Single Correct Answer)

+2.5

-0.83

The mean and standard deviation (SD) of marks obtained by 50 students of a class in 4 subjects are given below :

Which one of the following subjects shows highest variability of marks ?

Mathematics

Physics

Chemistry

Biology

NDA Mathematics 4 September 2022

MCQ (Single Correct Answer)

+2.5

-0.83

The mean and standard deviation (SD) of marks obtained by 50 students of a class in 4 subjects are given below :

What is the coefficient of variation of marks in Mathematics ?

37.5%

38.0%

38.5%

39.0%

NDA Mathematics 4 September 2022

MCQ (Single Correct Answer)

+2.5

-0.83

Consider the following grouped frequency distribution :

Class	0-10	10-20	20-30	30-40	40-50	50-60
Frequency	1	2	4	6	4	3

What is the median of the distribution ?

34.5

35.5

NDA Mathematics 4 September 2022

MCQ (Single Correct Answer)

+2.5

-0.83

Consider the following grouped frequency distribution :

Class	0-10	10-20	20-30	30-40	40-50	50-60
Frequency	1	2	4	6	4	3

What is mean deviation about the median ?

11.4

11.1

10.8

10.5