The rain fall (in mm) in a city on 7 days of a week was recorded as follows: Day Mon Tues Wed Thurs Fri Sat Sun Rainfall (in mm) 1.2 10.3 5.5 0.0 13.5 7.0 1.0 (a) Find the range of the rainfall. (b) Find mean rainfall (c) On how many days was the rainfall less than the mean rainfall?
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Step-by-step explanation:
Range=max.term-min.term.
(a) therefore, range of the given data= 13.5-0.0 = 13.5
(b) mean= sum of total no. of terms / total terms
therefore, mean of the given data= 1.2+10.3+5.5+0.0+13.5+7.0+1.0= 38.5/7 =5.5
(C) since the mean is 5.5,
therefore, no. of days in which the rainfall less than
the mean = 3 (1.2, 0.0, 1.0).
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