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v1.1Tool
2026-05-10

Correlation

  • R verification: every result can be independently re-computed by R running in your browser (one-click opt-in, no server upload)
  • Publication-style scatter plot with least-squares regression line and inline `r · p · n` annotation
  • Min-sample-size guidance when X / Y have fewer than 3 paired values
v1.1Tool
2026-05-10

Descriptive Statistics

  • R verification: every result can be independently re-computed by R running in your browser (one-click opt-in, no server upload)
  • Distribution Shape section added: skewness and excess kurtosis (matches R `moments::skewness` / `e1071::kurtosis`)
  • Min-sample-size guidance when only one value is entered
  • Documentation note added clarifying Q1 / Q3 use linear interpolation (R `quantile(type=7)` / NumPy linear)
v1.1Tool
2026-05-10

PCA

  • R verification: variance decomposition (eigenvalues, % explained, cumulative) can be re-computed by R `prcomp()` running in your browser
  • Loadings Matrix bug fixed — previously displayed all NaN due to a typed-array rendering quirk; now shows real loading coefficients
v1.1Tool
2026-05-10

Regression

  • R verification: every result can be independently re-computed by R `lm()` running in your browser (one-click opt-in, no server upload)
  • Confidence-interval labels now follow the active confidence level — switching 90% / 95% / 99% updates all displays in real time
v1.1Tool
2026-05-10

T-Test

  • R verification: every result can be independently re-computed by R running in your browser (one-click opt-in, no server upload)
  • Publication-style mean comparison bar chart with ±SD error bars and significance bracket (**, *, n.s. with p-value)
  • Mann-Whitney rank-biserial sign convention now matches R `wilcox.test`; ties continuity correction aligned with R defaults