Question

The number of cars gary sold each month was 12, 5, 9, 11, 14, and 10. what was gary’s median number of sales per month? a. 10 b. 10.5 c. 61 d. 10.2

Answer 1

Answer: 10.5

Reason

First we need to sort the numbers from smallest to biggest.

Sorting gets us {5, 9, 10, 11, 12, 14}

There are n = 6 items in this set. Because n is even, the middle most value will be between slots 3 and 4 (note how n/2 = 6/2 = 3)

The values in slots 3 and 4 are 10 and 11 respectively.

The midpoint is (10+11)/2 = 10.5 which is the median.