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Mean for Frequency Distribution Table

If the mean o...

Question

If the mean of $4, 6, x, 9, 10, 5$ is $7,$ find the value of $x$ .

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Solution

$4, 6, x, 9, 10, 5$

Mean $= 7$

$\Rightarrow \frac{4 + 6 + x + 9 + 10 + 5}{6} = 7$

$\Rightarrow 34 + x = 42$

$\Rightarrow x = 8$

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