Find the mean of the following data is 20.6. Find the value of p.
x
f
fx
10
3
30
15
150
P
25
25P
7
175
35
5
N = 50
∑fx = 25P + 530
It is given that,
Mean = 20.6
= 20.6
= 1030
25P = 500
P = = 20
Therefore, P = 20