Inferences about equality of proportionsInferences about the proportions in populations are made using random samples of data drawn from each population of interest.

Equality of proportions hypothesis test
A hypothesis test formally tests if the proportions in two or more populations are equal.
Exact and asymptotic p-values
Asymptotic p-values are useful for large sample sizes when the calculation of an exact p-value is too computer-intensive.
Wald, Score, Likelihood ratio
Three different ways are used to make large sample inferences all using a X² statistic, so it is important to understand the differences to avoid confusion.

Related concepts

Chi-square, Fisher exact or McNemar?

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