Absolute measures of Dispersion are expressed in same units in which original data is presented but these measures cannot be used to compare the variations between the two series. Relative measures are not expressed in units but it is a pure number. It is the ratios of absolute dispersion to an appropriate average such as co-efficient of Standard Deviation or Co-efficient of Mean Deviation.
Absolute Measures
Range
Quartile Deviation
Mean Deviation
Standard Deviation
Relative Measure
Co-efficient of Range
Co-efficient of Quartile Deviation
Co-efficient of mean Deviation
Co-efficient of Variation.
