What is a Correlation Matrix?
A correlation matrix is a table showing correlation coefficients between variables. Each cell in the table shows the correlation between two variables. A correlation matrix is used to summarize data, as input into a more advanced analysis, and as a diagnostic for advanced analyses. Key decisions to be made when creating a correlation matrix include: […]
How to Create a Correlation Matrix in R
A correlation matrix is a table of correlation coefficients for a set of variables used to determine if a relationship exists between the variables. The coefficient indicates both the strength of the relationship as well as the direction (positive vs. negative correlations). In this post, I’ll show you how to calculate and visualize a correlation […]
