rater.bias {concord}R Documentation

coefficient of rater bias

Description

calculates a coefficient of systematic bias between two raters

Usage

rater.bias(x)

Arguments

x CxC classification matrix or matrix of classification scores into C categories.

Details

rater.bias calculates a reliability coefficient for two raters classifying n objects into any number of categories. It will accept either a cxc classification matrix of counts of objects falling into c categories or a 2xn or nx2 matrix of classification scores.

Value

statistic value of coefficient
p the probability of the coefficient as a df 1 Chi-square variable

Author(s)

Jim Lemon

References

Bishop Y.M.M., Fienberg S.E. & Holland P.W. (1975) Discrete multivariate analysis: theory and practice. Cambridge, Massachusetts: MIT Press.

See Also

mcnemar.mh

Examples

 # fake a 2xn matrix of three way classification scores
 ratings<-matrix(sample(1:3,60,TRUE),nrow=2)
 rater.bias(ratings)

[Package concord version 1.4-9 Index]