Question

A teacher needs to report the average of her last long quiz to her superior. Here are the scores, 58, 37, 25, 43, 38, 22, 31, 49, 53, 28.

Answer 1

Answer:

average of the Scores = Sum of observations/ no of observations

= (58+37+25+43+38+22+31+49+53+28)/10

= 384/10

= 38.4

The average score is 38.4

Answer 2

Given,

A teacher needs to report the average of her last long quiz. The scores are: 58, 37, 25, 43, 38, 22, 31, 49, 53, 28

To Find,

Find the average

Solution,

We can solve the question as follows:

It is asked that we have to find the average of the given scores. The scores are: 58, 37, 25, 43, 38, 22, 31, 49, 53, 28.

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

$Average = \frac{Sum\: of\: all\: observations}{Total\: no.\: of\: observations}$

From the given set of scores,

$Sum\: of\: all\: observations = 58 + 37 + 25 + 43+ 38+ 22 + 31+ 49 + 53 + 28 = 384$

$Total\: observations = 10$

Substituting the values in the above formula,

$Average = \frac{384}{10}$

             $= 38.4$

Hence, the average is equal to 38.4.