Question

The owner of a busy coffee shop wanted to see if it was worth keeping tea on the menu. She logged the number of cups of tea she sold each day for seven days.
6 12 5 7 7 3 9

Calculate the mean, median, range, and midrange of the number of cups of tea sold for the week.

Answer 1

First sort the data: 3, 5, 6, 7, 7, 9, 12.

- Mean = (6+12+5+7+7+3+9)/7 = 49/7 = 7 cups
- Median = middle value (4th) = 7 cups
- Range = max − min = 12 − 3 = 9 cups
- Midrange = (max + min)/2 = (12 + 3)/2 = 7.5 cups