![]() ![]() Use the negative z table pdf file to determine the probability of a negative z score value. Use the Z score table pdf file to determine the corresponding area or probability to a positive z score value.įor example, the z-score value of 2 indicates it is 2 standard deviations greater than the mean.Ī negative Z score value indicates the raw score value is below the mean of the distribution. The positive Z score value represents the raw score value is higher than the mean of the distribution. The Z-score value either be Positive or Negative depending on raw score value is greater than the mean or less than the mean. ![]() The standard score value gives you how far the raw score value is from the mean. The standard normal distribution table is the normal distribution having a mean value of 0 and a standard deviation of 1. In this post, equivalent terms like z-values, standardized variables, and normal scores are used. Standard scores are most commonly called z-scores. Z table or the Z-score table also called the standard normal table is a mathematical table used to find the probability that the z-score value is below, above, or between the values on the standard normal distribution.
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