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    Measures of Central Tendency : key information

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    Name and define three measures of central tendency. Give their formulas and an example of application.

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    1. The mean is the most common measure of central tendency. It simply the sum of the numbers divided by the number of numbers. The symbol m is used for the mean of a population. The symbol M is used for the mean of a sample.

    The formula for M is:

    M = σX/N
    where σX is the sum of all the numbers in the sample and
    N is the number of numbers in the sample.

    Example: The mean of 7, 12, 24, 20, 19 is (7 + 12 + 24 + 20 + ...

    Solution Summary

    The solution names and defines three measures of central tendency.