Question

This is the sum of all the results included in the sample divided by the number of observations. It is the same as the average.

Answer 1

Mean is the sum of all the results included in the sample divided by the number of observations.

Step-by-step explanation:

Suppose we have the score of 5 randomly selected students in a class.

The scores are:

`45,48,52,65,78`

Now the mean of the 5 randomly selected students will be:

`Mean = (Sum-of-scores-of-five-students )/(Number-of-students)`

`=(45+48+52+65+78)/(5)`

`=(288)/(5)`

`=57.6`

Therefore, the mean is 57.6