What is the chi-squared test? The chi-squared test, often written as χ 2 test, is a statistical hypothesis test used in the analysis of categorical variables to determine whether observed data are ...

computes a chi-square goodness-of-fit test for specified proportions. The chi-square goodness-of-fit test examines whether the children's hair color has a specified multinomial distribution for two ...

Requests one-way to n-way frequency and crosstabulation tables and computes the statistics for these tables. Default: If you omit the TABLES statement, PROC FREQ generates one-way frequency tables for ...

A chi-square (also called chi-squared) test is a classical statistics technique that can be used to determine if observed-count data matches expected-count data. A chi-square (also called chi-squared) ...

"Significance" has a very particular meaning in biology thanks to statistics. How does this term prove an experiment's results are worth special attention?