Question

The mean of a frequency distribution is 8.1. If Efixi = 132+5k and E fi
= 20, then find the value of k.​

Answer 1

Answer:

x=8.1

fixi=132+5k

f=20

so,8.1=132+5k/20

8.1 x 20=132+5k

162=132+5k

162-132=5k

30=5k

k=30/5

k=6

HOPE IT IS HELPFUL  :)

Step-by-step explanation: