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Bootstrap CI: Two SamplesStatLens

Choose a dataset:

Edit or paste two columns (CSV with headers, group and value):

Open a CSV, TSV, or JSON file:

Statistic:

Confidence level %

Resamples

Original Groups

→

Resampled Groups

Select a dataset, then run a simulation to see results.

Bootstrap CI: Two Samples

Resample each group with replacement many times, recording the difference in group means each time. The histogram is the bootstrap distribution of the difference in means — read a confidence interval for that difference off its middle. This is an estimation tool: no hypotheses, no p-value.

1: +1 resample
2: +10 resamples
3: +100 resamples
4: +1000 resamples
0: Reset
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Bootstrap CI: Two SamplesStatLens ? ⚙

Original Groups

Resampled Groups

Bootstrap CI: Two SamplesStatLens