Assessment terms beginning with N

This is a measurement glossary, not a general HR glossary. It covers the vocabulary that appears the moment you open a score report or challenge a vendor's claim — reliability, validity, norms, cut scores, item statistics and fairness analysis — because that is the vocabulary buyers are handed without explanation and the one that decides whether a number can carry a decision.

• Norm group

  Also called Normative sample, Comparison group, Norms

  A norm group is the reference sample a raw score is compared against in order to produce a percentile or standard score. The same performance can be an unremarkable result against one norm group and an exceptional one against another, which makes the identity, size and date of the norm group part of the score itself.

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