Members of the Gymkhana Club are charged quarterly fees on the basis of their average weight, rounded to the nearest kg. Of the members, weighed between and kg., weighed between and kg., weighed between and kg., and the remaining weighed between and kg. If members are charged Rs. per kilo of their weight, on average how much must each member pay?
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Members of the Gymkhana Club are charged quarterly fees on the basis of their average weight, rounded to the nearest kg. Of the 560 members, 120 weighed between 60 and 69 kg., 140 weighed between 70 and 79 kg., 170 weighed between 80 and 89 kg., and the remaining weighed between 90 and 99 kg. If members are charged Rs. 50 per kilo of their weight, on average how much must each member pay? (A) Rs. 3800 (B) Rs. 3900 (C) Rs. 4000 (D) Rs. 4100
Descriptive statistics and dispersion has come up 117 times in 6 exams since 2004.
This question is on The arithmetic mean and its properties, part of Descriptive statistics and dispersion in Statistics.
Computing the mean from raw and grouped data, and what changes when data are shifted, scaled or corrected.
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Question from the DSE 2006 paper. Solutions are TestStop's own. Not affiliated with or endorsed by any examination authority.