| 21. | In electronics the harmonic mean in the same way gives the average contribution per component for parallel conductance and serial capacitance.
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| 22. | One example where the harmonic mean is useful is when examining the speed for a number of fixed-distance trips.
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| 23. | A tilde over the letter n ( \ tilde { n } ) is sometimes used to indicate the harmonic mean.
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| 24. | The geometric harmonic mean is also designated as the "'harmonic geometric mean "'. ( cf.
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| 25. | First, the geometric mean of the arithmetic and harmonic means is equal to the geometric mean of the two values:
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| 26. | The focus so determined would be about 1.3 m, the approximate harmonic mean of the near and far distances.
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| 27. | The harmonic mean plays a role in maximum likelihood estimation for the four parameter case, in addition to the geometric mean.
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| 28. | Archytas named the harmonic mean, important much later in projective geometry and number theory, though he did not invent it.
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| 29. | Both of these sequences converge to the same number, which we call the "'geometric harmonic mean "'
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| 30. | Precision and recall are combined using the harmonic mean in the following fashion, with recall weighted 9 times more than precision:
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