Fisher’s Exact Test is used to determine whether or not there is a significant association between two categorical variables. It is typically used as an…

A Chi-Square Test of Independence is used to determine whether or not there is a significant association between two categorical variables. To perform a Chi-Square…

A Chi-Square goodness of fit test is used to determine whether or not a categorical variable follows a hypothesized distribution. This tutorial explains the following: The motivation…

This calculator finds the p-value associated with a given Chi-Square score and a specified degrees of freedom. X2 (Chi-Square Score) df (Degrees of freedom) P-value:…

A two proportion z-test is used to test for a difference between two population proportions. This tutorial explains the following: The motivation for performing a two proportion…

A one proportion z-test is used to compare an observed proportion to a theoretical one. This tutorial explains the following: The motivation for performing a one proportion…

A two proportion z-test is used to test for a difference between two population proportions. The test statistic is calculated as: z = (p1-p2) /…

A one proportion z-test is used to compare an observed proportion to a theoretical one. The test statistic is calculated as: z = (p-p0) /…

A paired samples t-test is used to compare the means of two samples when each observation in one sample can be paired with an observation…

Welch’s t-test is used to test whether or not the means of two populations are equal. This type of test does not assume that the…