Question

If the mean of 7,9,6 ,X and 5 is 8 find the value of x

Answer 1

Step-by-step explanation:

. This is answer for the question.

Answer 2

☯️ Given :-

• The series are 7,9,6,x and 5
• Mean is 8

R.T.P :-

To find the value of x....

⚛️ Solution :-

We know that mean is

$\frac{sum \: of \: all \: observations}{no. \: of \: observations}$

By substituting the values , we get

$\frac{7 + 9 + 6 + x + 5}{5} = 8$

As here the no. of observations = 5

So, we get

$\frac{27 + x}{5} = 8$

$27 + x = 40(5 \times 8)$

$x = 40 - 27$

$x = 13$

✳️ Verification :-

$\frac{7 + 9 + 6 + 13 + 5}{5} = 8$

$\frac{40}{5} = 8$

$8 = 8$

Hence verified that x = 13 .....✔️