Edited sentence: , three), different items may be rated by different individuals (Fleiss, 1971).It is important to note that whereas Cohen's kappa assumes the same two raters have rated a set of items, Fleiss' kappa assumes that although there are a fixed number of raters (e.That is, Item 1 is rated by Raters A, B, and C; but Item 2 could be rated by Raters D, E, and F