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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
Definition of Measures of Central Tendency. A measure of central tendency is a measure that tells us where the middle of a bunch of data lies. The three most common measures of central tendency are the mean, the median, and the mode. More About Measures of Central Tendency. Mean: Mean is the most common measure of central tendency.