# Ch. 5 states z-scores

 2 useful purposes of z-scores 1. each z-score tells the exact location of the original X value within the distribution2. z-score form a standardized distribution that can be directly compared to other distributions that also have been transformed into z-scores z-score specifies the precise location of each x value withing a distribution. Always includes a + or - sign z-scores to standardize a distribution: shape z-score shape will be the same as the original distribution of raw scores z-scores to standardize a distribution: The mean z-score distribution will always have a mean of 0 z-scores to standardize a distribution: standard deviation distribution of z-scores will always have a standard deviation of 1 standard deviation is composed of scores that have been transformed to create predetermined values for u and o. standardized distributions are used to make dissimilar distributions comparable procedure for standardizing a distribution to create new values for u and o (2 steps) 1. the original raw scores are transformed into z-scores2. the z-scores are then transformed into new X values so that the specific u and o are attained standardizing a sample distribution 1. the sample of z-scores will have the same shape as the original sample of scores2. the sample of z-scores will have a mean of 03. the sample of z-scores will have a standard deviation of 1. Authormmb65 ID34975 Card SetCh. 5 states z-scores Descriptionch.5 definitions Updated2010-09-15T22:34:27Z Show Answers