Nothing
Y <- rnorm(20)
Z <- rnorm(20)
cor(Y, Z, method = "spearman")
ranksY <- rank(Y)
ranksZ <- rank(Z)
cor(ranksY, ranksZ, method = "pearson")
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.