When analysing ranking data from one or more groups of judges one may wish to allow for the possibility that the judges have paid more attention to the allocation of the extreme ranks, rather than to the intermediate ranks. In some cases they may have only worried about assigning the top ranks (1 and 2, say) while randomly allocating the remaining ones. In another context, the analystmay wish to only take account of the agreement among judges with respect to extreme ranks (top or bottom, or both), In such situations an analysis of concordance within, and between groups, if appropriate, should be able to deal with extreme ranks specifically. We propose a data analyticapproach, related to an analysis of diversity,which actyally permits an analysis of concordance for each rank separately.
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