Talk:Folded normal distribution

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Should the σ2 be inside of the variance equation? I think not. Check this.

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(μ, σ2), then (Y/σ) ~ NoncentralChi(df=1, noncentrality=μ/σ). So pedantically speaking, your statement is only correct for σ=1. Btyner (talk) 19:41, 16 December 2007 (UTC)