Harmonic Average

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Harmonic Average

In mathematics, an average used primarily for calculating an average rate, such as an average interest rate. It is calculated as the reciprocal of an arithmetic mean with inverse values. It is also known as the harmonic mean.
References in periodicals archive ?
Name Notation Definition Arithmetic Mean A(a, b) [a + b]/2 Geometric mean G(a, b) [square root of [ab]] Harmonic Mean H(a, b) [2ab]/[a + b] Logarithmic Mean L(a, b) [[a - b]/[In a - In b]] when a [not equal to] b a when a [not equal to] b Heron Mean [H.
From definitions of harmonic mean and geometric mean, consider
From which we find that DF is equal to the harmonic mean of x and y.
r] = n are all divisors of n, then their harmonic mean is