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Running paired comparison — before vs after analysis...
Sent to — interactive charts, statistical results, R code, and AI insights.
Analyze another fileStandard-library analysis: did a paired or repeated measurement actually change? Map a before column and an after column measured on the same subject — before vs after, treatment vs control on the same unit, two raters on the same items — and get the paired t-test with a confidence interval on the mean change, a Wilcoxon signed-rank cross-check, Cohen's dz effect size, a normality check that picks the safer headline, and the share of pairs that moved up or down.
Interactive scatter visualization
Interactive histogram visualization
Interactive table visualization
Plain-English interpretation — what the numbers mean, what's significant, and what to do next.
Check whether a before-and-after measurement on the same people really changed
See our FAQ for details on pricing, data privacy, and how the analysis works. Every report includes a Methodology section showing the statistical test, assumptions checked, and diagnostics run.
Run any analysis on your own data — validated R analyses, interactive reports, AI insights, and PDF export.
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