Calculate Cohen's Kappa

This function calculates different version of Cohen's Kappa.

Usage

cohens_kappa(rater_one, rater_two)

Arguments

rater_one

factor rating of the first coder.

rater_two

factor ratings of the second coder.

Value

Returns a list containing the results for Cohen' Kappa if no weights are applied (kappa_unweighted), if weights are applied and the weights increase linear (kappa_linear), and if weights are applied and the weights increase quadratic (kappa_squared).

References

Cohen, J (1968). Weighted kappa: Nominal scale agreement with provision for scaled disagreement or partial credit. Psychological Bulletin, 70(4), 213–220. https://doi.org/10.1037/h0026256

Cohen, J (1960). A Coefficient of Agreement for Nominal Scales. Educational and Psychological Measurement, 20(1), 37–46. https://doi.org/10.1177/001316446002000104

See also

Other performance measures: fleiss_kappa(), kendalls_w(), kripp_alpha()