Entry-point wrapper `CompareMeans` for mean-comparison tests (t-tests, ANOVA). analyze, compare, means, class, comparemeans, methods, js, new, data, record, string, number # Analyze · Compare Means Entry-point wrapper `CompareMeans` for mean-comparison tests (t-tests, ANOVA). ## Class: `CompareMeans` **Constructor** ```js new CompareMeans(data: Record) ``` - `data` – object mapping **group name → numeric array**. ### Methods - `paired(...colNames): PairedTTest` – paired t-test on two named columns; trims to equal length. - `independent(...colNames): IndependentTTest` – two-sample **Student** t-test (pooled variance). - `independentWelch(...colNames): IndependentTTest` – two-sample **Welch** t-test. - `anova(...colNames): OneWayAnova` – one‑way ANOVA (pooled/“classic”). - `anovaWelch(...colNames): OneWayAnova` – Welch’s one‑way ANOVA. - `oneSample(colName?, mu0=0): OneSampleTTest` – one-sample t‑test for a single column (defaults to the first key if `colName` omitted). All methods accept optional **column names**. If omitted, the test uses all keys from the constructor `data`.