I answered a thread on How to sum number of similar votes to each item?, I thought it would be of interested to folks working with survey data. The writeup got long enough that I decided to turn it into a blog post, here's a view:
And the post: http://drawingwithnumbers.artisart.org/counting-pairwise-similar-votes-in-tableau/
And the workbook: https://public.tableau.com/views/pairwisesimilarvotes/joinview?:embed=y&:display_count=yes&:showTabs=y.
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