math-mean

Math.mean exposes the following methods:

• arithmetic(numbers, weights = null)

$$ \frac{\sum x}{n} $$

• geometric(numbers, weights = null)

$$ \sqrt[n]{\prod x} $$

• harmonic(numbers, weights = null)

$$ n \cdot \left[ \sum \frac{1}{x} \right]^{-1} $$

• quadratic(numbers, weights = null)

$$ \sqrt[2]{\frac{\sum x^2}{n}} $$

• power(numbers, weights = null, power)

$$ \sqrt[p]{\frac{\sum x^p}{n}} $$

• root(numbers, weights = null, degree = 2)

$$ \left( \frac{\sum \sqrt[d]{x}}{n} \right)^d $$

• logarithmic(numbers, weights = null, base = Math.E)

$$ e^{\square}, \square = \frac{1}{n} \sum \log_b(x) $$

• contraharmonic(numbers, weights = null)

$$ \frac{\sum x^2}{\sum x} $$

• Lehmer(numbers, weights = null, p = 2)

$$ \frac{\sum x^p}{\sum x^{p-1}} $$

• f(numbers, weights = null, fn, inverseFn)

$$ f^{-1}\left( \frac{1}{n} \sum f(x) \right) $$