Talk:Folded normal distribution

Should the $$\sigma^2$$ be inside of the variance equation? I think not. Check this.

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Isn't this distribution exactly the same as a noncentral chi distribution with 1 degree of freedom? --Zvika 11:05, 17 July 2007 (UTC)
 * If Y ~ FoldedNormal(&mu;, &sigma;2), then (Y/&sigma;) ~ NoncentralChi(df=1, noncentrality=&mu;/&sigma;). So pedantically speaking, your statement is only correct for &sigma;=1. Btyner (talk) 19:41, 16 December 2007 (UTC)

what is Phi capital
Obviously, Phi is not explained. Every variable or function should be explained! Please, check and correct. — Preceding unsigned comment added by 87.95.58.3 (talk) 19:32, 7 March 2016 (UTC)
 * I added the definition of Phi, the normal cumulative distribution function, and a link to that page. Hawryluka (talk) 20:46, 14 March 2016 (UTC)