The mean weight of 8 numbers is 15. If each number is multiplied by 2, what will be the new mean?

Given:

The mean weight of 8 numbers is 15.

Each number is multiplied by 2.

To do:

We have to find the new mean.

Solution:

We know that,

Mean $\overline{X}=\frac{Sum\ of\ the\ observations}{Number\ of\ observations}$

Weight of 8 numbers $=15$

Each number is multiplied by 2.

This implies,

New mean $= 15 \times 2$

$= 30$

Hence, the new mean is 30.

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Updated on: 10-Oct-2022

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