Question

∑fi=15,∑fixi=3p+36 and mean of any distribution is 3,then p=
(a)2 (b)3 (c)4 (d)5

Answer 1

mean = 3

mean =fixi/fi

3=3p+36/15

45=3p+36

45-36=3p

3p=9

p=9/3

p=3

Therefore, (b)3

Answer 2

(b) 3

Hope it helps alot !!! ✌✌