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(i) Find the range of the rainfall in the above data. (ii) Find the mean rainfall for the week

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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.

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(i) Range of the rainfall = Highest Rainfall – Lowest Rainfall
= 20.5 – 0.0 = 20.5

(ii) 

(iii) No. of days of rainfall which was less than Mean rainfall = 5 days

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