The chi-square test, likelihood ratio test, and other goodness of fit tests in a family are shown to have monotonic power functions, and hence are unbiased, for testing a simple hypothesis that all ...

Chi-Square Statistic (χ²): Calculated using the formula χ² = Σ [ (Observed - Expected)² / Expected ], summing over all categories (GoF) or cells (Contingency). This is primarily computed using ...

The frequency tables list the variable values (hair color) in the order in which they appear in the data set. The "Test Percent" column lists the hypothesized percentages for the chi-square test.

chi square test / goodness of fit; chi-square; .2; chi square A statistical test that allows one to determine whether observed quantities of a specific characteristic differed from the expected ...

The minimum sample size for a Chi-Square test is not set in stone, but there are general guidelines you can follow. One rule of thumb is that each category or cell in your contingency table should ...

Herbert Solomon, Michael A. Stephens, Distribution of a Sum of Weighted Chi-Square Variables, Journal of the American Statistical Association, Vol. 72, No. 360 (Dec ...