The weekly wages of randomly selected steel workers are given below

MATHEMATICS · Multi-part · CBSE · Mathematics · Statistics · Statistics

Problem

The weekly wages of 200200 randomly selected steel workers are given below. Estimate the following:
Wage (WW)Number of workers
720≤W<740720\leq W<7401717
740≤W<760740\leq W<7603838
760≤W<780760\leq W<7804747
780≤W<800780\leq W<8005757
800≤W<820800\leq W<8201818
820≤W<840820\leq W<8401010
840≤W<860840\leq W<8601010
860≤W<880860\leq W<88033
(1) Mean (2) Standard deviation

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