Abstract
Ordinal data are useful to quantify constructs on a non metric scale. Several indices have been devised to evaluate similarities among judges. Such indices will be considered as distance measures for a hierarchical clustering of required courses in a degree program of Economics faculty.

keywords
Ordinal measuremetns, hierchical clustering, teaching evaluations

(*) Lavoro presentato alla XL riunione scientifica della SIS, Roma Tor Vergata 5-6 giugno 2001

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