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From: Deane Yang (deane_yang_at_[hidden])
Date: 2006-07-11 13:12:50

Topher Cooper wrote:
> My personal preference would be to use what is probably the most
> common abbreviations for the basic functions. They are simple,
> compact and standard. Maybe a little obscure for those who only took
> statistics in high school or some who only know cookbook statistics
> -- but that is what documentation is for. The ignorant are after all
> ignorant whatever choice is made, but you can do something about it
> by using the standard terms:
> dist.pdf(x) -- Probability Density Function, this is what looks like
> a "bell shaped curve" for a normal distribution, for example. A.k.a. "p"
> dist.cdf(x) -- Cumulative Distribution Function. P
> dist.ccdf(x) -- Complementary Cumulative Distribution Function;
> ccdf(x) = 1 - cdf(x)
> dist.icdf(p) -- Inverse Cumulative Distribution Function: P';
> icdf(cdf(x)) = x and vice versa
> dist.iccdf(p) -- Inverse Complementary Cumulative Distribution
> Function; iccdf(p) = icdf(1-p); iccdf(ccdf(x)) = x

These would not be my first choice, but since they are relatively
standard abbreviations and much shorter to type, I think they are
reasonable suggestions.

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