`scipy.stats._continuous_distns:wald_gen`

Signature

class wald_gen(momtype = 1, a = None, b = None, xtol = 1e-14, badvalue = None, name = None, longname = None, shapes = None, seed = None)

A Wald continuous random variable.

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The probability density function for wald is:

f (x) = \frac{1}{2 π x ^{3}} exp (- \frac{( x - 1 ) ^{2}}{2 x})

for $x >= 0$ .

wald is a special case of invgauss with mu=1.

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