2016 · Q47
Which of the following is not an absolute measure of dispersion?
General Mental Ability, Quantitative Aptitude and StatisticsElementary statistics
- ARange
- BMean deviation
- CQuartile deviation
- DCoefficient of variation
Explanation
Absolute measures of dispersion — range, mean deviation, quartile deviation, standard deviation — are expressed in the units of the data. The coefficient of variation (SD ÷ mean × 100) is unit-free: a relative measure used to compare variability across datasets. Hence (D).