Preliminary norms

© Paul Cooijmans

Explanation

Preliminary norms are usually established in the same way as regular norms, but before there is enough data for a full statistical report; so, in principle based on less than 30 test submissions. In some cases they are based on 30 or more submissions but less than 70 actually used score pairs. The criteria to outgrow the preliminary stage are: at least 30 submissions AND at least 70 score pairs used in norming with for each test in its own right a clear positive correlation with the object test (not just an aggregate correlation over all of the used tests combined).

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The Imperial Seal