A family of robust estimators based on Tukey's biweight
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numeric vector of values to find the 'average' of
arguments to the underlying biweight algorithm
Tukey's Biweight calculates a set of weight terms for the elements of
x, based on a function of the each element of
x distance from
the median of
x. Those weight are then used in the calculation of the
x, by either mean or log-average (geometric mean).
For 'biweight', a numeric vector of length
length(x), of the scalar
weights for each element of
Otherwise, a numeric scalar that is the 'average' of
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