单词	harmonic mean
释义	Harmonic Mean The reciprocal of the average of the reciprocals. Say we have "n" values {a,b,c,...}, then we can calculate: Harmonic Mean = n / (1/a + 1/b + 1/c + ...) Steps: • Calculate the reciprocal (1/value) for every value. • Find the average of those reciprocals (add them and divide by n) • Then do the reciprocal of that average (=1/average) See: Reciprocal
随便看	hectagon hectare (ha) heft height helix hemisphere hendecagon hepta- heptagon hexa- hexadecimal hexadecimal number hexagon hexahedron highest common factor hindu-arabic number system histogram horizontal horizontal flip hour hour hand hundred hundredth hyperbola hyperbolic functions

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