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    How to Calculate Average (Mean)

    The average (or arithmetic mean) is the most common measure of central tendency. It's used to find the typical value in a dataset.

    Average (Mean) Formula

    Average = Sum of all values / Number of values

    Where:

    • Σx = Sum of all values
    • n = Number of values

    Step-by-Step:

    1. 1

      Add all values

      Sum up all the numbers in your dataset.

    2. 2

      Count the values

      Count how many numbers there are.

    3. 3

      Divide

      Divide the sum by the count.

    Worked Examples:

    Test scores

    Values: 85, 90, 78, 92, 88

    Result: 86.6

    Sum = 433, Count = 5, Average = 433/5 = 86.6

    Frequently Asked Questions