Difference between revisions of "Rnd"
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Ray Chason (talk | contribs) m (I said I'd prettify the reference, I might as well do it) |
Ray Chason (talk | contribs) (Correct formula for mean) |
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{{DISPLAYTITLE:rnd}} | {{DISPLAYTITLE:rnd}} | ||
| − | {{randomvariable|name=rnd(x)|graph=rnd.svg|caption=[[wikipedia:Probability mass function|Probability mass function]] of rnd(10).|distribution=[[Wikipedia:discrete uniform distribution|uniform]]|mean=<math>(x | + | {{randomvariable|name=rnd(x)|graph=rnd.svg|caption=[[wikipedia:Probability mass function|Probability mass function]] of rnd(10).|distribution=[[Wikipedia:discrete uniform distribution|uniform]]|mean=<math>(x+1)/2</math>|stddev=<math>\sqrt{(x^2-1)/12}</math>}} |
rnd(x)<ref>{{function|rnd.c|rnd}}</ref> is a pseudo-random number function used in NetHack when a result should be unweighted. The range of values is between 1 and x inclusive (that is, 1<=rnd(x)<=x). | rnd(x)<ref>{{function|rnd.c|rnd}}</ref> is a pseudo-random number function used in NetHack when a result should be unweighted. The range of values is between 1 and x inclusive (that is, 1<=rnd(x)<=x). | ||
Revision as of 23:38, 1 February 2011
| rnd(x) | |
|---|---|
 Probability mass function of rnd(10). | |
| Distribution | uniform |
| Mean | 
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| Standard deviation | 
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rnd(x)[1] is a pseudo-random number function used in NetHack when a result should be unweighted. The range of values is between 1 and x inclusive (that is, 1<=rnd(x)<=x).
References
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