About Lesson
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:
Where is the largest value and is the smallest value.
- Coefficient of Quartile Deviation (CQD)
The coefficient of quartile deviation is defined as:
- Coefficient of Mean Deviation (CMD)
The coefficient of mean deviation is calculated by dividing the mean deviation by the mean:
- 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:
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