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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
In this lesson, we've discussed four measures of central tendency. These measurements can provide you with important information about a set of data. These four measures are the mean, median, mode and range. 1  The mean means average. 2  To find it, add together all of your values and divide by the number of addends.