Find the mean of this set of numbers.

7, - 9, 6, - 10, - 13, - 5

A.

7.7

B.

-24

C.

4

D.

-4

First step when finding the mean is to add all the values together

7 + - 9 + 6 + - 10 + - 13 + - 5

To make this easier, first add all the positive numbers 7 + 6 = 13

Then add (basically take away) the minus values one by one

13 - 9 = 4

4 - 10 = - 6

-6 - 13 = - 19

-19 - 5 = - 24

Next step is to divide this total by the number of values there were

In this case, there were 6 values

-24 / 6 = - 4

D. - 4

Mean of the above set of numbers is D. - 4

Mean is the average of the sum of the numbers.

add all the numbers : 7 + (-9) + 6 + (-10) + (-13) + (-5) = - 24

divide the sum by the count of numbers added: - 24/6 = - 4