This function calculates Kendall's coefficient of concordance w with and without correction.
kendalls_w(rater_one, rater_two, additional_raters = NULL)Returns a list containing the results for Kendall's coefficient of concordance w
with and without correction.
factor rating of the first coder.
factor ratings of the second coder.
list Additional raters with same requirements as rater_one and rater_two. If
there are no additional raters set to NULL.
Other performance measures:
cohens_kappa(),
fleiss_kappa(),
kripp_alpha()