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.

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.

Following is the weekly wage earnings of 19 workers: {:("Wages(Rs.)",10,20,30,40,50),("Number of Workers",4,5,3,2,5):} Calculate arithmetic mean using Direst Method,

The following table shows marks obtained by the students of a class in their test in English: {:("Marks",0-10,10-20,20-30,30-40,40-50),("Number of Students"," "20," "24," "40," "36," "20):} Calculate arithmetic mean using Step-deviation method.

Calculate mode from the following data : {:("Wages",25,50,75,80,85,90),("Number of Workers",4,6,9,3,2,1):}

The following table shows wages of the workers. Calculate the average wage of the workers. {:("Wages(Rs.)",10-19,20-29,30-39,40-49,50-59),("Number of Workers"," "8," "9," "12," "11," "6):}

Data relating to wages of some workers are given below . Find out median wage . {:("Wages(Rs.)",20-30,30-40,40-50,50-60,60-70),("Number of Workers"," "25," "12," "15," "13," "5):}