Math Dictionary / Mean
Mean
The mean is the sum of the values divided by the number of values.
StatisticsGrade 5Grade 6Grade 7Grade 8GEDSATACT
What it means
It is the arithmetic average.
Also called: average
Examples
| Mean of 2, 4, 9 is 5 |
| 15 total points over 3 games gives mean 5 |
| Mean can be affected by outliers |
Common mistake
Do not forget to divide by how many values there are.
Try one
Question: Find the mean of 6, 8, and 10.
Show answer
(6 + 8 + 10) / 3 = 24 / 3 = 8.