Probability Weighted Moments

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October 6th 2008, 07:10 AM
wantanswers

Probability Weighted Moments

Need Help Finding The First 4 PWM of the generalized normal distribution

f(x)= $<br /> \frac{1}{\alpha\sqrt{2\pi}}e^{ky-\frac{y^2}{2}} <br /> <br />$

where
$<br /> y= -k^{-1}log(1-k(x-\epsilon)/\alpha)<br />$
$<br /> \epsilon+\frac{\alpha}{k}<x< \infty<br />$
F(x)= $<br /> \int^{y}_{-\infty} e^{\frac{-t^2}{2}}~dt<br />$

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