Lines Matching refs:excess

312 (that includes a table of formulae for kurtosis excess for various distributions)
315 which treats "kurtosis" and "kurtosis excess" as the same quantity.
319 This subtraction of 3 is convenient so that the ['kurtosis excess]
327 [h4:kurtosis_excess Kurtosis excess]
332 Returns the kurtosis excess of the distribution /dist/.
334 kurtosis excess = [gamma][sub 2]= [mu][sub 4] / [mu][sub 2][super 2]- 3 = kurtosis - 3
339 The kurtosis excess is a measure of the "peakedness" of a distribution, and
341 the kurtosis excess of a normal distribution is zero.
344 a defined kurtosis excess.
346 Kurtosis excess can have a value from -2 to + infinity.
350 The kurtosis excess of a normal distribution is zero.