ABSTRACT
We can use Rater Agreement Index (RAI) as an index of agreement level of scores gained from two or more raters. This index has a value from 0 to 1 . If its value is nearly to 1, it means the raters have a strong agreement in scoring. On the other hand, If its value is nearly to 0, it means that that agreement is not strong. Thus, if the raters are have a good knowledge of scoring, this index can indicate the standard of those scoring rubrics.
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