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-deviationMethod.

Wage rate of 19 workers is given below: {:("Wages(Rs.)",10,20,30,40,5

1.	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-deviationMethod.
Answer» Solution : `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.