Relative Dispersion & Coefficient of Variation

Practice relative dispersion & coefficient of variation through 15 original single-select and multiselect questions. Build from core understanding and calculations to interpretation, counterexamples and method selection. Prerequisites: arithmetic, percentages, ordered data and the preceding foundations topics. Compute and interpret relative dispersion; Compare absolute and relative spread; Check ratio-scale requirements; Analyze scaling and origin changes; Identify near-zero and signed-mean limitations; Evaluate what equal CVs do and do not establish. Worked solutions explain the reasoning and each distractor. Quantile, trimming and variance conventions are stated where needed. Sources include NIST and established statistical documentation. Cover photograph: Lukas Blazek / Pexels.