education

A teaching-focused, browser-only workbench for one-way analysis of variance: load a CSV, choose a factor (2–6 levels) and one or more continuous responses, and read the ANOVA table, the compact-letter-display (CLD) summary from Tukey HSD, and a forest plot of pairwise mean differences. Companion to StatTests, StatRegress, and StatTables — runs entirely client-side, no data leaves the browser.

An interactive teaching tool for Principal Component Analysis: paste or upload a numeric dataset and the app reports the eigen-decomposition of the (correlation or covariance) matrix, the scree plot, the cumulative variance explained, the score and loading matrices, and a coordinated biplot. Companion to StatTables, StatTests, StatRegress, StatCI, StatPower, and StatCorr — runs entirely in the browser, no backend.

An interactive teaching tool for the correlation coefficient: paste a bivariate dataset (or use a generator), and the app reports Pearson, Spearman, and Kendall coefficients with their inference, the scatter plot, and a Fisher-$z$ confidence interval for $\rho$. Companion to StatTables, StatTests, StatRegress, StatCI, and StatPower — runs entirely in the browser, no backend.

An interactive teaching tool that draws many samples from a chosen population, builds a confidence interval from each, and shows visually how often the intervals actually cover the true parameter — curing the 95% confident misconception. Companion to StatTables, StatTests, StatRegress, and StatPower; runs entirely in the browser, no backend.

A teaching-focused, browser-only workbench for linear regression: paste a CSV, fit an OLS model, and read the standard coefficient table, model summary, and residual diagnostics — with a drag-a-point mode for simple regression that updates the fit live. Companion to StatTables and StatTests; everything runs client-side, no data leaves the browser.

A browser-based replacement for the statistical tables at the back of stats textbooks. Pick a distribution ($Z$, $t$, $\chi^{2}$, $F$, Binomial, Poisson, Exponential) and obtain a classical lookup table, a probability calculator with shaded plot, and a step-by-step formula breakdown — all three coordinated, with matching cells highlighted in the table.

Mixed-methods evaluation of flipped classroom effectiveness for engagement and inclusion in quantitative education (Johns Hopkins University, n=35).