Inter-rater reliability for the dialogue and automated feedback quality ratings

<p dir="ltr">The interrater_reliability R script looks for input files in a sub-directory of the current path called "data". It creates confusion matrices for each set of ratings and calculates Cohen's kappa, a statistic of intra- or inter-rater reliability . The code lines need to be executed one by one to capture the results as these are not saved automatically </p>