Question

Calculate the average of10,15,20,25and 30

Answer 1

Average

= Sum of observations/No. of observations

Average

= 10 + 15 + 20 + 25 + 30/ 5

= 100/5

= 20

Answer 2

Given,

10,15,20,25and 30

To Find,

The average of 10,15,20,25and 30 =?

Solution,

We can solve the question as follows:

It is given that we have to find the average of 10, 15, 20, 25, and 30.

We know that the average of a set of observations is given as the sum of all the observations divided by the total number of observations.

$Average = \frac{Sum\: of\: all\: observations}{Total\: observations}$

Here,

$Sum\: of\: observations = 10 + 15 + 20 + 25 + 30 = 100$

$Total\: number\: of\: observations = 5$

Therefore, the average will be equal to:

$Average = \frac{100}{5}$

$Average = 20$

Hence, the average of 10, 15, 20, 25, and 30 is equal to 20.