Standard Scores

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Standard Scores

• Standard scores use a common scale to indicate
  how an individual compares to other individuals
  in a group.
• The simplest form of a standard score is a Z
  score.
• A Z score expresses how far a raw score is from
  the mean in standard deviation units. (see Figure
  10.13)
• Standard scores provide a better basis for
  comparing performance on different measures than
  do raw scores.
• A Probability is a percent stated in decimal form
  and refers to the likelihood of an event
  occurring.
• T scores are z scores expressed in a different
  form (z score x 10 50).

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Examples of Standard Scores