Glossary

Scaled scores	are scores that are adjusted via some type of scale by applying the same constant to all the scores in the distribution.



Standard scores or z scores	are uniform values to which any raw score value can be converted. A z score indicates the number of standard deviation units a raw score is positioned either above or below the mean.



The z-score distribution	is a distribution of transformed raw scores with a mean of zero and a standard deviation of 1. The transformation of a distribution of raw scores into a distribution of z scores allows comparisons between different distributions to be made.

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