The chi-squared (χ 2) test statistic is calculated using the following formula: In this formula, the ∑ symbol denotes taking the sum of (adding together) the succeeding quantities over all four cells ...

Chi-square tests are often used to test hypotheses. The chi-square statistic ... students select among the offered classes using the formula given above and a χ 2 statistical table.

The chi-square value is calculated using the following formula: Using this formula ... Pearson's chi-square test works well with genetic data as long as there are enough expected values in ...

The chi-square test is a statistical hypothesis test that is used to compare observed and expected counts in a contingency table. Its uses include: tests for independence, tests for homogeneity, and ...