Mean Deviation #!#Measures of Dispersion

Types Of Averages:Mean,Median,Mode |Measures Of Dispersion |Exercise Questions|Relation Between Mean,Median & Mode

Consider the following statements: 1. Coefficient of variation depends on the unit of measurement of the variable. 2. Range is a measure of dispersion. 3. Mean deviation is least when measured about median. Which of the above statements are correct?