Kendall's W with R?

Question

I would have liked to know how to compute the Kendall rank correlation coefficient with R and the Kendall's W, also known as Kendall's coefficient of concordance with R.

Thanks

Answer 1

For the correlation, just add the method to the cor function:

cor(data, method = 'kendall')

For W there is the kendall function in the irr package. So,

install.packages("irr")
library(irr)
kendall(ratings, correct = TRUE)