Question

What is the mean of first 8 whole numbers?

• A. $3$
• B. $3.5$
• C. $4$
• D. $4.5$

Answer 1

The correct option is B $3.5$

First $8$ whole numbers are $0,1,2,3,4,5,6,7$

We know that, $\text{Mean}=\frac{\text{Sum of all observations}}{\text{Total number of observations}}$

$\therefore \text{Mean}=\frac{0+1+2+3+4+5+6+7}{8}$

$\Rightarrow \frac{28}{8}=3.5$

Hence, the mean of first $8$ whole numbers is $3.5$.