The daily minimum temperature recorded (in ^\circ F) at a place during six days of a week was as under:
MondayWednesdayThursdayFridaySaturday35.530.827.332.123.829.9 Find the mean temperature.
The rainfall (in mm) in a city on 7 days of a certain week was recorded as follows:
DaysRain fall (in mm)Monday0.0Tuesday12.2Wednesday2.1Thursday0.0Friday20.5Saturday5.5Sunday1.0
(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.