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The arithmetic mean is the most common measure of central tendency. It is simply the sum of the numbers divided by the number of numbers. The symbol Î¼ is used for the mean of a population. The symbol M is used for the mean of a sample. The formula for Î¼ is shown below: Î¼ = Î£X/N
The mean is the most widely used measures of central tendency, because it is the measure of central tendency that is most often used in inferential statistics. However, as you will see at the end of this section, the mean does not always provide the best indication of the typical score in a distribution.