# How to Perform Quadratic Regression in Stata

When two variables have a linear relationship, you can often use simple linear regression to quantify their relationship. However, when two variables have a quadratic relationship,…

# How to Perform Multiple Linear Regression in Stata

Multiple linear regression is a method you can use to understand the relationship between several explanatory variables and a response variable. This tutorial explains how to perform…

# How to Perform Simple Linear Regression in Stata

Simple linear regression is a method you can use to understand the relationship between an explanatory variable, x, and a response variable, y. This tutorial explains how…

# How to Create a Correlation Matrix in Stata

In statistics, we’re often interested in understanding the relationship between two variables. For example, we might want to understand the relationship between the number of…

# How to Perform a Mann-Whitney U Test in Stata

A Mann-Whitney U test (sometimes called the Wilcoxon rank-sum test) is used to compare the differences between two samples when the sample distributions are not normally distributed…

# How to Perform a Paired Samples t-test in Stata

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 in the other…

# How to Perform a Two Sample t-test in Stata

A two sample t-test is used to test whether or not the means of two populations are equal. This tutorial explains how to conduct a two sample…

# How to Perform a One Sample t-test in Stata

A one sample t-test is used to test whether or not the mean of a population is equal to some value. This tutorial explains how to conduct…

# How to Perform a Repeated Measures ANOVA in Stata

A repeated measures ANOVA is used to determine whether or not there is a statistically significant difference between the means of three or more groups in which…

# How to Perform a Two-Way ANOVA in Stata

A two-way ANOVA is used to determine whether or not there is a statistically significant difference between the means of three or more independent groups that…