Find the mean deviation from the mean of the following data:
Classes:, 10-20, 20-30, 30-40, 40-50, 50-60, 60-70, 70-80
freequency:2, 3, 8, 14, 8, 3, 2

Find the mean deviation about the mean for the following data: Marks obtained,10-20,20 - 30,30-40,40-50,50-60,60-70,70-80 Number of students,2,3,8,14,8,3,2

Write the median class of the following distribution: Classes: 0-10 10-20 20-30 30-40 40-50 50-60 60-70 Frequency: 4 4 8 10 12 8 4

Calculate the median deviation from the median of the following data: Wages per week (in Rs.),10-20,20-30,30-40,40-50,50-60,60-70,70-80 No.of workers,4,6,10,20,10,6,4

Find the mean deviation about median for the following data : Marks 0-10 10-20 20-30 30-40 40-50 50-60 Number of 6 8 14 16 4 2 Girls

Find out the arithmetic mean by the Step-deviation Method of the following: {:("Class Interval",0-10,10-20,20-30,30-40,40-50,50-60,60-70,70-80),("Frequency "," "12," "16," "32," "52," "42," "32," "18," "12):}

Find the median of the following data: {:("Class Interval",0-10,10-20,20-30,30-40,40-50),(f,6,8,5,4,7):}

Using step deviation method find the standard deviation and its coeficient of the following data.Class 20-30,40-50,50-60,60-70,70-80,80-90 and Frequency 3,61,132,153,140,51,2

Find the median of the following data: class : 0-10 , frequency :5 , 10-20 , 3 , 20-30 , 4 , 30-40 , 3 , 40-50 , 3, 50-60 , 4, 60-70 , 7 , 70-80 , 9 , 80-90 , 7 , 90-100 , 8 ,

Obtain the mean , median and mode of the following data : {:("Marks",0-10,10-20,20-30,30-40,40-50,50-60,60-70,70-80),("Number of Students"," "5," "7," "15," "25," "20," "15," "8," "5):}