Answer:
A. Mean
Step-by-step explanation:
Mean can also be described as the average of a data set.
The calculated average of a data set is the sum of all data values divided by the number of data values we have in a data set. This is the same as the mean.
For example, let's say you bought 5 t-shirts. The cost of the 5 t-shirts can be regarded as a data set, which are: $10, $10, $11, $12, and $15.
The average cost of t-shirt bought by you can be calculated as:
Average = Mean = (10 + 10 + 11 + 12 + 15)/5
= 58/5
= 11.6
The average cost of t-shirt you bought, which is also the mean cost of t-shirt is $11.6
