MENU
Question -

The arithmetic mean of the following data is 14, find the value of k. (C.B.S.E. 2002C)

X

5

10

15

20

25

f

7

k

8

4

5



Answer -


⇒ 14 (24 + k) = 360 + 10k
⇒ 336 + 14k = 360 + 10k
⇒ 14k- 10k- 360 -336 24
⇒ 4k = 24
⇒ k= 24/4 = 6 
Hence k = 6

Comment(S)

Show all Coment

Leave a Comment

Free - Previous Years Question Papers
Any questions? Ask us!
×