Q. 55.0( 5 Votes )

If the mean of five observations x, x + 2, x + 4, x + 6 and x + 8 is 11, find the value of x.

Answer :

Observations are = x, x + 2, x + 4, x + 6, x + 8


No. of observations = 5



Given mean = 11


11 =


x + x + 2 + x + 4 + x + 6 + x + 8 = 11 × 5


5x + 20 = 55


5x = 55 – 20


x = = 7


So, value of x = 7.


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