Question
Find the mean of first $10$ prime numbers.
✓
Answer
The first $10$ prime numbers are:
$ 2,3,5,7,11,13,17,19,23,29$
$ \bar{x}=\frac{x_1+x_2+x_3+\ldots+x_n}{n} $
$ n =10$
$ \Rightarrow \bar{x}=\frac{2+3+5+7+11+13+17+19+23+29}{10}$
$\Rightarrow \bar{x}=\frac{129}{10}$
$ \Rightarrow \bar{x}=12.9 $
Therefore, Mean of first $10$ prime numbers $=12.9$
$ 2,3,5,7,11,13,17,19,23,29$
$ \bar{x}=\frac{x_1+x_2+x_3+\ldots+x_n}{n} $
$ n =10$
$ \Rightarrow \bar{x}=\frac{2+3+5+7+11+13+17+19+23+29}{10}$
$\Rightarrow \bar{x}=\frac{129}{10}$
$ \Rightarrow \bar{x}=12.9 $
Therefore, Mean of first $10$ prime numbers $=12.9$
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