IN MATH: 1. n. a standard normal score. 2. n. a score normally distribution with a mean of 0 and a standard deviation of 1.
3. n. for a sample or population, the ratio of the difference between a score and the mean and the standard deviation. See below.

      To compute z, use the formula

(Enter negative two as "-2.")
      score, x:
      mean, :
      standard deviation, s:

      the mean from the score.

      the (x - ) by s

4. n. the factor used to multiply the standard deviation to produce the "distance" a score is to be from the mean.

      The formula to compute x:

(Enter negative two as "-2.")
      z-score, z:
      mean, :
      standard deviation, s:

      the z-score and standard deviation.

      + zs

IN ENGLISH: 1. as defined above.

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