PYB110 Study Guide - Final Guide: Interquartile Range, Standard Deviation, Xm Satellite Radio
24 Oct 2013
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Document Summary
It is typical or representative of the overall data. It is calculated by adding the sum of all scores and dividing by the number of scores. The mean is the best way for us to estimate the unknown score of an individual. The mean is influenced by every score in a distribution. Therefore, it represents all scores but because of this can be influenced by outliers. There should be equal distance between the total of all mean scores above the mean and below the mean. The mean can end up being a value or score which does not exist in the original scores. The mode is the most common score in a unimodal distribution (normal one peak distribution). It is represented as the peak in a histogram or frequency polygon. It is useful only when a few possible values are given as it only describes one score.
