Question

The rainfall in a city on each day of a week is recorded below. Find the average rainfall for the week.

Day	Mon	Tue	wed	Thurs	Fri	sat	sun
Rainfall (in m m)	1.2	10.3	5.5	0.0	13.5	7.0	1.0

Answer 1

The sum of recorded rain fall

1.2 mm + 10.3 mm + 5.5 mm+ 13.5 mm + 7 mm+ 1mm = 38.5 mm

Number of days = 7

Average rainfall of the week = sum of all observations / number of days

= 38.5 / 7 mm = 5.5 mm