1
NDA 2016 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
If m is the geometric mean of $${\left( {{y \over z}} \right)^{\log (yz)}}$$, $${\left( {{z \over x}} \right)^{\log (zx)}}$$ and $${\left( {{x \over y}} \right)^{\log (xy)}}$$, then what is the value of m?
A
1
B
3
C
6
D
9
2
NDA 2017 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Consider the following statements :

1. Coefficient of variation depends on the unit of measurement of the variable.

2. Range is a measure of dispersion.

3. Mean deviation is least when measured about median.

Which of the above statements are correct?
A
1 and 2 only
B
2 and 3 only
C
1 and 3 only
D
1, 2 and 3
3
NDA 2017 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Given that the arithmetic mean and standard deviation of a sample of 15 observations are 24 and 0 respectively. Then which one of the following is the arithmetic mean of the smallest five observations in the data?
A
0
B
8
C
16
D
24
4
NDA 2017 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following can be considered as appropriate pair of values of regression coefficient of y on x and regression coefficient of x on y ?
A
(1, 1)
B
($$-$$1, 1)
C
$$\left( { - {1 \over 2},2} \right)$$
D
$$\left( {{1 \over 3},{{10} \over 3}} \right)$$
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