Question

Find the mean of:

iii. First five odd natural numbers

Answer 1

Find the mean of first five odd natural numbers

First six even natural numbers are $1,3,5,7$ and $9$.

Number of data values $=5$

$\text{Mean}=\frac{\text{Sum of all data values or observations}}{\text{Number of data values or observations}}$

$\Rightarrow \text{Mean}=\frac{1+3+5+7+9}{5}$

$=\frac{25}{5}=5$

Hence, the mean of the first five odd natural number is $5.$