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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
Stat 130D, UCLA, Ivo Dinov .1. Measures of Central Tendency: Ungrouped Data. â¢ Measures of central tendency yield. information about âparticular places or. locations in a group of numbers.â. â¢ Common Measures of Location. âMode.