Go to rseek and search for the method we are interested in, e.g. “pearson product-moment correlation”. Set the search type to “Vignette”, and you should see several results;

The first search result shows something “like the product-moment correlation”, so is probably not relevant. The second search result shows promise, so take a look at that; broom and dply

This page contains an example showing a calculation of Pearson’s product-moment correlation. Excellent!

From this we can see that the cor.test from the stats package is used to calculate these correlations. We can get help with cor.test by typing ?cor.test in the console, e.g.