Practice Mean in Math
Use these practice problems to test your method after reviewing the concept explanation and worked examples.
Quick Recap
The arithmetic mean (average) of a data set is the sum of all values divided by the number of values.
Imagine redistributing all the data equally — the mean is the value each person would get if everyone shared equally. It is the balance point of the data.
Example 1
easyFind the arithmetic mean of the data set: \{4, 8, 15, 16, 23\}.
Example 2
mediumA student scored 72, 85, 90, 68, and 95 on five tests. What score does she need on the sixth test to achieve a mean of 85?
Example 3
easyFind the mean of \{12, 7, 3, 14, 9, 11\}.
Example 4
mediumFive quiz scores have a mean of 18. Four of the scores are 12, 17, 20, and 19. What is the fifth score?