ENH/FAQ: Fleiss Kappa giving nan results, randolph's kappa · Issue #4387 · statsmodels/statsmodels · GitHub
The Equivalence of Weighted Kappa and the Intraclass Correlation Coefficient as Measures of Reliability - Joseph L. Fleiss, Jacob Cohen, 1973
![Inter-Rater Reliability Essentials: Practical Guide In R: Kassambara, Alboukadel: 9781707287567: Amazon.com: Books Inter-Rater Reliability Essentials: Practical Guide In R: Kassambara, Alboukadel: 9781707287567: Amazon.com: Books](https://m.media-amazon.com/images/I/41HIGKrzdNL._AC_SY780_.jpg)