Question

Mean of following data is 6.2, find the value of ‘’ x 2 4 6 8 10 12 f 5 10 10 5 2​

Answer 1

Answer:

Correct option is

D

20

Mean

∑

1

5

y

∑

1

5

(x×y)

⇒20.2=

6+8+p+10+6

60+120+20p+250+180

⇒(30+p)×20.2=20p+610

⇒0.2p=4

⇒p=20