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Harmonic Mean

The harmonic mean of n numbers xi (where i = 1, 2, ..., n) is: The special cases of n = 2 and n = 3 are given by:      and so on.

For n = 2, the harmonic mean is related to arithmetic mean A and geometric mean G by: If you want to change selection, open document below and click on "Move attachment"

Subject 4. Measures of Center Tendency
, therefore, is not recommended for use as the only measure of central tendency. A further disadvantage of the mode is that many distributions have more than one mode. These distributions are called "multimodal." <span>Harmonic Mean The harmonic mean of n numbers x i (where i = 1, 2, ..., n) is: The special cases of n = 2 and n = 3 are given by: and so on. For n = 2, the harmonic mean is related to arithmetic mean A and geometric mean G by: The mean, median, and mode are equal in symmetric distributions. The mean is higher than the median in positively skewed distributions and lower than the median in negatively skewed dist