Question

If a series is multiplied by 5, then the value of arithmetic mean of that series will:
(a) added by 5 (b) subtracted by 5
(c) multiplied by 5 (d) divided by 5

Answer 1

Explanation:

assume that series is 1,2,3,4,5

AM of series is 15/5 = 3

if series is multiplied by 5 then 75

Am is also multiplied by 5 then 15

New Am = 75/15 = 5