Question

A police officer recorded the speeds of the first six cars whose drivers he ticketed for speeding today.

Car Speed

(miles per hour)

1 67

2 74

3 85

4 80

5 74

6 82


What is the mean of the cars' speeds?

Answer 1

Mean is average.

Add the speeds together and divide by number of cars:

67 + 74 + 85 + 80 + 74 + 82 = 462

462/6 = 77

Mean = 77 miles per hour