NDA 2017 Mathematics question

Consider the following statements : 1. Variance is unaffected by change of origin and change of scale. 2. Coefficient of variance is independent of the unit of observations. Which of the statements given above is/are correct?

(A)1 only
(B)2 onlyCorrect
(C)Both 1 and 2
(D)Neither 1 nor 2

Answer: (B)

Solution

Variance is unaffected by a change of origin, but a change of scale by a factor multiplies it by ; statement 1 is incorrect. The coefficient

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-028809