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Following are the wages of 19 workers:
`{:("Wages(Rs.)",10,20,30,40,50),("Number of Workers",4,5,3,2,5):}`
Calculate arithmetic mean, using Short-cut Method.

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`barX=A+(sumfd)/(sumf)=30+(-10)/(19) = 30 - 10/19`
`=30-0.53 = 29.47`
Arithmetic Mean = Rs. 29.47.

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