Calculate range and coefficient of range of the following series.

Find the range and the coefficient of range of the following series : 40 , 38 , 52 , 34 , 62 , 54 , 42 , 65

Find out the range and the coefficient of range of the following series:

Calculate range and coefficient of range from the following data: 4,7,8,46,53,77,8,1,5,13

Calculate coefficient of variation of the following series:

Find the range and the coefficient of range of the following data.