8.6. For weighted kappa with {,7 1 (i j)2/(c l)2}, show that two

8.6. For weighted kappa with {éõ,7 — 1 — (i — j)2/(c — l)2}, show that two tables that have the same marginal distributions have the same values of KW whenever they have the same correlations, with row and column numbers as the scores (Graham and Jackson 1993).