2 Proportion Z Test

Definition

The 2 proportion z test is a hypothesis test used to compare two proportions from independent samples. It determines whether there is enough evidence to conclude that the proportions are significantly different from each other.

Related terms

Null Hypothesis: A statement assumed to be true until proven otherwise by data analysis.

Alternative Hypothesis: A statement that contradicts or negates the null hypothesis.

Significance Level (Alpha): The predetermined threshold used for determining whether there is enough evidence against the null hypothesis.