The weekly wages of 200 randomly selected steel workers are given below

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

Problem

The weekly wages of 200 randomly selected steel workers are given below. For the given data, estimate the:
Wage WWNumber of workers
720≤W<740720\leq W<74017
740≤W<760740\leq W<76038
760≤W<780760\leq W<78047
780≤W<800780\leq W<80057
800≤W<820800\leq W<82018
820≤W<840820\leq W<84010
840≤W<860840\leq W<86010
860≤W<880860\leq W<8803
(1) Mean (2) Standard deviation.

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