Q. 1. The following distribution gives the pattern of overtime work – InterviewSolution

1.	Q. 1. The following distribution gives the pattern of overtime work per month done by 180 employeesof a company. Calculate the arithmetic mean.Overtime(in hrs.)0-1010-30 30-40 40-50 50-60No. of Employees1060504020
Answer» 32.78Explanation:x f m FM (1) (2) (3) (4)0-10 10 5 5010-30 60 20 120030-40 50 35 175040-50 40 45 180050-60 20 55 1100 Sigma(f)= 180 Sigma(fm)= 5900MEAN:Sigma(fm)/Sigma(f)= 5900/180=32.78

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