**Measures of Relative Dispersion**

**Relative dispersion** measures are used to compare the variability of different datasets. They are dimensionless, allowing for a better comparison of datasets with different units or magnitudes.

**Coefficient of Range (CR)**

The **coefficient of range** is defined as:

$CR = frac{L – S}{L + S}$

Where $L$ is the largest value and $S$ is the smallest value.

**Coefficient of Quartile Deviation (CQD)**

The **coefficient of quartile deviation** is defined as:

$CQD = frac{Q_3 – Q_1}{Q_3 + Q_1}$

**Coefficient of Mean Deviation (CMD)**

The **coefficient of mean deviation** is calculated by dividing the mean deviation by the mean:

$CMD = frac{MD}{bar{x}}$

**Coefficient of Variation (CV)**

The **coefficient of variation** is calculated by dividing the standard deviation by the mean and multiplying by 100 to express it as a percentage:

$CV = frac{sigma}{bar{x}} times 100$