Question

The weights in $kg$ of $8$ new born babies are $3,3.2,3.4,3.5,4,3.6,,4.1,3.2$. Find the mean weight of the babies.

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

Answer 1

The correct option is B $3.5$

Given, the weights are $3,3.2,3.4,3.5,4,3.6,4.1,3.2$.

Number of babies $=8$.

We know, Mean is given by,

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

Therefore, mean weight

$=\frac{3+3.2+3.4+3.5+4+3.6+4.1+3.2}{8}$

$=\frac{28}{8}=3.5$ kg.

Hence, option $B$ is correct.