Question

In the mean of observation x,x+2,x+4,x+6 and x+8 is 11, the find the value of x

Answer 1

Mean =(sum of observations)/(no. Of observations)


Here,

Mean ={x+x+2+x+4+x+6+x+8}/5

11={5x+20}/5

11=5(x+4)/5

11=x+4

11-4=x

7=x


I hope this will help you


-by ABHAY

Answer 2

Hi friend✋✋✋✋
----------------
Your answer
-------------–------

Given observations : - x,x+2,x+4,x+6,x+8.

Mean of the observations = 11

Then,
----------

(x + x + 2 + x + 4 + x + 6 + x + 8)/5 = 11

=> 5x + 20 = 11 × 5

=> 5x = 55 - 20

=> 5x = 35

=> x = 35/5

=> x = 7

HOPE IT HELPS