Question

what what is the mean of the cars
speeds

A.76 miles per hour
B.78 miles per hour
C.72 miles per hour
D.77.5 miles per hour

Answer 1

Mean is the average. to find mean, you add all the numbers and divide it by how many numbers there are.

68 + 75 + 85 + 80 + 75 + 82 = 465

There are 6 numbers. That means you have to divide 465 by 6 to get the mean.

Divide:

465 / 6 = 77.5

The answer is D. 77.5

Hope this helped☺☺

Answer 2

The answer is D because when you add all the speeds (465) and then divide by 6 (total number of cars) you get 77.5.