Two-proportion z-test

Client

Z statistic for difference of two proportions.

Two-proportion z-test

Tests difference in proportions from two success/total pairs—pooled standard error for a demo z statistic. Processing runs in your browser—Toolcore does not need your paste for the core operation on this page.

Educational statistics only—confirm assumptions before production analysis.

How to use

Paste or type in the main field, then read the output below. Use Load example when available, or open the page with ?q= / ?qb= so tickets and agents share the same input.

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Nearby workflows on Toolcore

  • Math expression evaluator — Evaluate basic + − × ÷ arithmetic with parentheses in your browser—no variables. Useful when the same table needs another statistic.
  • Two-proportion z-test (lite) — Z statistic for difference of two sample proportions. Useful when the same table needs another statistic.
  • Margin of error proportion — Wald margin of error for a sample proportion. Useful when the same table needs another statistic.
  • Units tools — Data size (binary KB/MB/…), length/temperature/weight, speed, volume, and area (acres, ha, sq ft)—focused routes from this index. Useful when the same table needs another statistic.

Common use cases

  • Two-proportion z-test for quick local checks without uploading data.
  • Copy results into tickets, docs, or classroom notes.

Common mistakes to avoid

  • Unexpected input shape

    See the intro and how-to notes for accepted formats.

FAQ

Is processing local?

Yes—this runs entirely in your browser.

Agent prefill?

Use q or qb for the main text field when supported.

More tools

Related utilities you can open in another tab—mostly client-side.