Measuring Dispersion of Data

The dispersion measures the spread of numeric data. the measures include range, quartiles, quantiles, and percentiles.

Range –  The range of a set of values is the difference between the largest and smallest values in the set.

Quantiles – Quantiles are the points taken at regular intervals of a data distribution, dividing it into essentially equal size consecutive sets.

Quartiles – If the total set is divided into four equal parts then it’s known as quartiles.

Percentile – If we divide the set into 100 equal parts or quantiles then it’s known as a percentile.