ds@mcpanalytics.aiA data scientist you can email your data and question to, and get a reliable response. Not AI slop.A data scientist you can email. Not AI slop.
Upload your data and get a complete proportion tests & confidence intervals report. Free.
Free analyses run on up to 10,000 rows. Larger files are randomly sampled to that size, so sign up to analyze your full dataset.
Running proportion tests & confidence intervals analysis...
Sent to . Inside: interactive charts, statistical results, R code, and AI insights.
Analyze another fileThe practical guide behind this tool: when it applies, how to read the output, and the traps that make it say the wrong thing.
Standard-library analysis: did the conversion rate really differ between two groups? Map a binary outcome (0/1, yes/no, TRUE/FALSE, converted/not) and a two-level group column and get each group's rate with a Wilson 95% confidence interval, the two-sample proportion z-test with a continuity-corrected chi-square cross-check, the absolute difference with a Newcombe hybrid confidence interval, the relative change as computed, and an automatic Fisher's exact fallback — clearly disclosed — whenever any cell count is too small for the z-test.
Interactive bar visualization
Interactive table visualization
Interactive table visualization
Interactive table visualization
Plain-English interpretation of what the numbers mean, what's significant, and what to do next.
A/B test readout: did the treatment variant convert better than control, and by how much?
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: R analyses, interactive reports, AI insights, and PDF export.
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CympleData Scientist Send me your data and question, I’ll send you the analytics. ds@mcpanalytics.ai
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