Enter n Enter s Enter σ Enter Significance Level

##### How does the Chi-Square χ2 Test Calculator work?
Free Chi-Square χ2 Test Calculator - This calculator determines a χ2 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.

### What 2 formulas are used for the Chi-Square χ2 Test Calculator?

Test Stat: (n - 1)s22
Degrees of Freedom = n - 1

For more math formulas, check out our Formula Dossier
##### What 6 concepts are covered in the Chi-Square χ2 Test Calculator?
alternative hypothesis
opposite of null hypothesis. One of the proposed proposition in the hypothesis test.
H1
chi-square χ2 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.
H0
test statistic
a number calculated by a statistical test