The difference between Arithmetic mean and Quadratic mean

When used as nouns, arithmetic mean means the measure of central tendency of a set of values computed by dividing the sum of the values by their number, whereas quadratic mean means a type of average, calculated as the square root of the mean of the squares, ie. q = \sqrt { x_1^2 + x_2^2 + ... + x_n^2 \over n }.

check bellow for the other definitions of Arithmetic mean and Quadratic mean

  1. Arithmetic mean as a noun (statistics, probability):

    The measure of central tendency of a set of values computed by dividing the sum of the values by their number; commonly called the mean or the average.

    Examples:

    "The arithmetic mean of 3, 6, 2, 3 and 6 is (3 + 6 + 2 + 3 + 6) / 5 = 4."

  1. Quadratic mean as a noun (mathematics):

    A type of average, calculated as the square root of the mean of the squares, ie. Q = \sqrt { x_1^2 + x_2^2 + ... + x_n^2 \over n }.

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