Comparative Centrality, Skewness Sensitivity & Resistance

Practice comparative centrality, skewness sensitivity & resistance through 20 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. Choose a center appropriate to purpose; Analyze sensitivity to extreme values; Evaluate symmetric and skewed examples; Construct counterexamples to center heuristics; Distinguish resistance from immunity; Explain limits of center-only reporting. 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.