## Quick Reference

In descriptive statistics, the average value of a set of scores calculated by taking the reciprocal of the arithmetic mean of the reciprocals of the scores. The scores 3, 4, 5 have reciprocal 1/3, 1/4, 1/5, and the arithmetic mean of these reciprocals is 0.261, so the harmonic mean of the set of scores is 1/0.261 = 3.831. Compare arithmetic mean, geometric mean.

*Subjects:*
Psychology.

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