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Wage rate of 19 workers is given below: ...

Wage rate of 19 workers is given below:
`{:("Wages(Rs.)",10,20,30,40,50),("Number of Workers",4,5,3,2,5):}`
Calculate arithmetic mean, using 'Step-deviation Method.

Text Solution

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`barX=A+(sumfd')/(sumf)xxC`
`A=30,C=10 and (sumfd')/(sumf)=(-1)/19=-0.053`
Putting these values in the formula:
`barX=30+(-1)/19xx10=30-0.053xx10`
`=30-0.053=29.47`
Arithmetic Mean = Rs. 29.47.
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TARUN JAIN & VK OHRI-MEASURES OF CENTRAL TENDENCY - ARITHMETIC MEAN-Illustration
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