Calculate mean deviation from the following data, using mean and median, respectively.

Calculate mean and standard deviation from the following data:

The following table gives distribution of marks for 50 students of a clas. Calculate mean deviation from the mean and median respectively from the data:

Calulate the mean deviation from the median of the following data

The mean deviation from the mean for the following data is

Calculate the mean deviation about median for the following data :

Calculate the mean deviation about median for the following data :