Question

15. If & fi = 20 & 2 fi xi = 2P+20 & mean of distribution is 2, then find the
value of P'​

Answer 1

Answer:

Given that:-

x

ˉ

=6

∑f

i

x

i

=2p+52

∑f

i

=11

Therefore,

11

2p+52

=6

⇒2p+52=66

⇒2p=66−52

⇒p=

2

14

=7

Hence the value of p is 7.

Hence the correct answer is 7.