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Study Guide 3.4

z score (standarizd value) the number of standerd deviation that a given value x is above or below the mean; The z score is caculated by using the folling Sample or population round z scores to two decimal places(such as 2.46)
percentile are one type of quantitites or factiles which partition data into groups with roughly the same number of values in each group; are measures of location denoted P1,P2,...,P99 which divide a set of data into 100 groups(with about 1% of the values in each gr
ordinary values -z<z score <z
unusual values z score< -z or z score> z
Created by: jking009