Common Tests: t-test, Chi-square, ANOVA & Friends

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Reference table of named tests: unpaired/paired t-test (2 groups, continuous, normal); ANOVA (>2 groups, continuous); Mann–Whitney U (2 groups, non-param); Wilcoxon signed-rank (paired, non-param); Kruskal–Wallis (>2, non-param); Chi-square & Fisher's exact (categorical); McNemar (paired categorical); log-rank (survival curves). One-line 'use when' for each. Exam tip: match the test to the data in the stem.

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