6th Grade · Statistics & Probability
Mean
6.SP.A.3
Definition
The average of a data set, found by adding all values and dividing by the number of values.
Teach it
Where it is taught, with guided notes, practice, homework, an exit ticket and an interactive Teacher Deck.
Examples
- 2+4+5+6+8 = 25, and 25 ÷ 5 = 5. The mean is 5.
- The mean 'evens out' the data into a fair share.
Key rule
Mean = sum of values ÷ number of values.
Memory hook
Add them all up, divide by how many.