This calculator determines a χ^{2} chi-square test on a test statistic and determines if it is outside an accepted range with critical value test and conclusion.

This calculator has 4 inputs.

This calculator has 4 inputs.

- Test Stat: (n - 1)s
^{2}/σ^{2} - Degrees of Freedom = n - 1

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- alternative hypothesis
- opposite of null hypothesis. One of the proposed proposition in the hypothesis test.

H_{1} - chi-square χ
^{2}test - chi-square test
- a statistical hypothesis test that is valid to perform when the test statistic is chi-squared distributed under the null hypothesis, specifically Pearsons chi-squared test
- critical value
- a point on the distribution of the test statistic under the null hypothesis that defines a set of values that call for rejecting the null hypothesis.
- null hypothesis
- in a statistical test, the hypothesis that there is no significant difference between specified populations, any observed difference being due to sampling or experimental error.

H_{0} - test statistic
- a number calculated by a statistical test