To illustrate this, let’s load the 1980 census data into Stata by typing the following into the command box: The command corr can be used to produce a correlation matrix for a particular dataset in Stata. How to Create a Correlation Matrix in Stata In this tutorial we explain how to create a correlation matrix in Stata. In these cases, we can create a correlation matrix, which is a square table that shows the the correlation coefficients between several pairwise combination of variables. The further away the correlation coefficient is from zero, the stronger the relationship between the two variables.īut in some cases we want to understand the correlation between more than just one pair of variables.

1 indicates a perfectly positive linear correlation between two variables.

0 indicates no linear correlation between two variables.

-1 indicates a perfectly negative linear correlation between two variables.

One way to quantify this relationship is to use the Pearson correlation coefficient, which is a measure of the linear association between two variables. For example, we might want to understand the relationship between the number of hours a student studies and the exam score they receive. In statistics, we’re often interested in understanding the relationship between two variables.

Pwcorr stata 15 vs stata 13