Chi-square statistic
ClientGoodness-of-fit chi-square for category counts.
About Chi-square statistic
χ² from observed,expected comma lists. The interactive transform on this page runs in your browser tab—Toolcore does not need your paste for the core operation described above.
How to use this page
Paste or type in the main workspace, run the primary action from the toolbar, then copy or download the result. Use Load example when the page offers it, or URL prefill (?q= / ?qb=) so agents and tickets open the same input.
Nearby workflows on Toolcore
- Binomial probability — P(X=k) for n trials, k successes, probability p. when units or numeric output should be checked on a related calculator.
- Standard error of the mean — SEM = s / √n from comma-separated sample. when units or numeric output should be checked on a related calculator.
- Math expression evaluator — Evaluate basic + − × ÷ arithmetic with parentheses in your browser—no variables. when units or numeric output should be checked on a related calculator.
- Z-score calculator — z = (x − μ) / σ from value, mean, and standard deviation. when units or numeric output should be checked on a related calculator.
Common use cases
- Chi-square statistic 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.
Binomial probability
ClientP(X=k) for n trials, k successes, probability p.
Standard error of the mean
ClientSEM = s / √n from comma-separated sample.
Math expression evaluator
ClientEvaluate basic + − × ÷ arithmetic with parentheses in your browser—no variables.
Z-score calculator
Clientz = (x − μ) / σ from value, mean, and standard deviation.