Q4Multiple correct3 Marks3 Dec 2023

Which among the following statements is/are true for a variable $X$?

A

Mean and median will be same if the $SD(X)=0$.

B

$Var(X)$ will always increase by multiplying each observation of $X$ by a constant.

C

$Range(X)$ will always remain the same with the increase in the number of observations of $X$.

D

$Range(X)$ will always increase with the increase in the number of observations of $X$.