Question

The rainfall (in mm) in a city on 7 days of a certain week was recorded as follows:(i) Find the range of the rainfall in the above data.(ii) Find the mean rainfall for the week.(iii) On how many days was the rainfall less than the mean rainfall.

Answer 1

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.