A Z-score, also called an ordinary rating, is a measure of what number of commonplace deviations an information level is away from the imply. It’s calculated by subtracting the imply from the info level after which dividing the consequence by the usual deviation. Z-scores are sometimes used to match information factors from totally different populations or to determine outliers.
StatCrunch is a statistical software program package deal that can be utilized to calculate Z-scores. To make use of the Z-score calculator in StatCrunch, comply with these steps: