Question

The daily rainfall for each day of a week in a certain city is given in millimeters. Find the average rainfall during the week. 9, 11, 8, 20, 10, 16, 12

Answer 1

Average rainfall during the week \(=\frac{\text{sum of rainfall for each day of the week}}{\text{number of days}}\)

\(=\frac{9 + 11 + 8 + 20 + 10 + 16 + 12}{7}\)

= 87/7

= 12.285 ≈ 12.29

∴ The average rainfall during the week is 12.29 mm.