Degrees of freedom are commonly discussed in hypothesis testing in statistics, such as a chi-square. Degrees of freedom are calculated by subtracting one from the number of items within the data ...

Chi-Square Tests 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, ... This ...

A chi-square (χ2) statistic is a test ... the degrees of freedom, and the sample size. ... Find the critical chi-square value using a chi-square value table or statistical software.

The first column label explains the contents of each table cell. The Pearson chi-square provides evidence of an association between eye and hair color (p=.007). The cell chi-square values show that ...