The rainfall (in mm) in a city on 7 days of a certain week was recorded as follows: Day Mon Tue Wed Thu Fri Sat Sun Rainfall (in mm) 0.0 12.2 2.1 0.0 20.5 5.3 1.0 Find the range of the rainfall from the above data. Find the mean rainfall for the week. On how many days was the rainfall less than the mean rainfall.

Explanation

1)Range=H-L=20.5-0=20.5

2)Mean=`(0+0+1+2.1+5.5+12.2+20.5)/7`

Mean=5.9 mm

3)5 days.