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 ...
A statistical test that allows one to determine whether observed quantities of a specific characteristic differed from the expected value purely by chance.
"Significance" has a very particular meaning in biology thanks to statistics. How does this term prove an experiment's results are worth special attention?