Correlation coefficient and correlation test in R
Introduction
Data
Correlation coefficient
Between two variables
Correlation matrix: correlations for all variables
Interpretation of a correlation coefficient
Visualizations
A scatterplot for 2 variables
Scatterplots for several pairs of variables...
![](https://statsandr.com/blog/2020-05-28-correlation-coefficient-and-correlation-test-in-r_files/correlation-coefficient-and-correlation-test-in-r.jpeg)