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    Standardized Z-score

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    How does a researcher determine the meaning of a score on a norm-referenced test such as an IQ test?
    Why are raw scores transformed to standardized scores, such as z-scores, in order to interpret those raw scores?
    How do these standardized scores help researchers to compare the scores on two different tests with different means and standard deviations? .

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    https://brainmass.com/statistics/central-tendency/standardized-z-score-572968

    Solution Summary

    How does standardizing help when comparing two scores? This solution explores this question. The solution is provided in a Word document which is attached.

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