Question

The arithmetic mean of 6, 7, 11, 8, X, 3, 8, 14 is 8. Find X
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Answer 1

Answer:

(6+7+11+8+x+3+8+14)/8=8

(x+57) /8=8

x+57=64

x=64-57

x=7

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

ANSWER:-

What is Mean?

Mean is the sum of all observations divided by number of Observations. It is a average of an sequence.

• Mean = 14,

So we can write as:-

$\dfrac{6 + 7 + 11 + 8 + x + 3 + 8 + 14}{8} = 8$

$\dfrac{54 + x}{8} = 8$

$54 + x = 64$

$x = 64 - 54$

$x = 10$

So, x = 10 is the answer.

Things to Note:-

$\sf{mean = \frac{sum \: \: of \: observations}{number \: of \: observations} }$

• This is the formula which is used to derive the average or mean of the given sequence.