Question

There is a missing number in the following data having range 11 and mean 8 find the missing number : 8,3,9,7,14

Answer 1

The missing number is 7

Solution:

Given that,

8,3,9,7,14

There is a missing number in the following data having range 11 and mean 8

Let "x" be the missing number

The mean is given as:

$Mean = \frac{ \text{ sum of all observations }}{ \text{ number of observations }}$

Therefore,

$8 = \frac{ 8 + 3 + 9 + 7 + 14 + x }{6}\\\\48 = 41 + x\\\\x = 48 - 41\\\\x = 7$

Thus the missing number is 7

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