Answer/Step-by-step explanation:
Mean is a measure of center tendency which can be said to be the average value of a set of data. It can be referred to as the commonest value in a data set. It is the sum of all data values in a given set divided by the number of values.
For example, a test score for a class of 5 is given as 5, 6, 2, 4, 7
The mean = sum of all values/number of data values
= (5 + 6 + 2 + 4 + 7)/5
= 24/5
Mean = 4.8