coincidence.matrix	calculate the coincidence matrix for kripp.alpha
cohen.kappa		Concordance of methods for nominal data (Cohen's)
kripp.alpha		Krippendorff's alpha
mcnemar.mh		calculates McNemar's coefficient of rater concordance
rater.bias		calculates a coefficient of inter rater bias
scores.to.counts	convert rater's category scores to category counts
stuart.maxwell.mh	calculates rater concordance for >2 categories
wtpc			Weighted percentages for rating with missing data
