Find the mean.–9, –2, 3, 10, 13, 15
To find the mean, also known as the average, of a set of numbers, you add up all the numbers in the set and then divide the sum by the total number of numbers.
For the given set of numbers: -9, -2, 3, 10, 13, 15.
Step 1: Add up all the numbers in the set:
-9 + -2 + 3 + 10 + 13 + 15 = 30
Step 2: Determine the total number of numbers in the set, which is 6.
Step 3: Divide the sum by the total number of numbers:
30 ÷ 6 = 5
Therefore, the mean of the given set of numbers is 5.