1
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
If V is the variance and M is the numbers, then what is V + M2 equal to ?
A
$${{124} \over 3}$$
B
$${{148} \over 3}$$
C
$${{248} \over 3}$$
D
$${{124} \over 9}$$
2
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
If the range of a set of observations on a variable X is known to be 25 and if Y = 40 + 3X, then what is the range of the set of corresponding observations on Y?
A
25
B
40
C
75
D
115
3
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Mean of 100 observations is 50 and standard deviation is 10. If 5 is added to each observation, then what will be the new mean and new standard deviation respectively?
A
50, 10
B
50, 15
C
55, 10
D
55, 15
4
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Consider the following discrete frequency distribution.

Image

What is the value of median of the distribution ?
A
4
B
5
C
6
D
7
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12