Question

Find the mean of first six natural numbers.

• A. $3.6$
• B. $7$
• C. $3.5$
• D. None of these

Answer 1

Answer: (C)

$3.5$

We know, first six natural numbers $=1,2,3,4,5,6$.
Then, we find the mean of $1,2,3,4,5,6$.

We know, Mean is given by,

$\text{Mean}=\frac{\text{Sum of the elements}}{\text{Total number of elements}}$.

Here, number of observations $=6$.

$⟹$ Mean $=\frac{1+2+3+4+5+6}{6}=\frac{21}{6}=3.5$.

Therefore, option $C$ is correct.