Unbias a random generator: Difference between revisions
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moved R to after Quackery
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Unbiased = Stats(count1=499963, count0=500037, percent=49.996299999999998)</pre>
=={{header|
<lang rsplus>randN = function(N) sample.int(N, 1) == 1▼
unbiased = function(f)▼
{while ((x <- f()) == f()) {}▼
x}▼
samples = 10000▼
print(t(round(d = 2, sapply(3:6, function(N) c(▼
N = N,▼
biased = mean(replicate(samples, randN(N))),▼
unbiased = mean(replicate(samples, unbiased(function() randN(N)))))))))</lang>▼
Sample output:▼
<pre> N biased unbiased▼
[1,] 3 0.32 0.50▼
[2,] 4 0.24 0.50▼
[3,] 5 0.21 0.49▼
[4,] 6 0.16 0.51</pre>▼
=={{header|Quackery}}==▼
<lang Quackery> $ "bigrat.qky" loadfile
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</pre>
▲<lang rsplus>randN = function(N) sample.int(N, 1) == 1
▲unbiased = function(f)
▲ {while ((x <- f()) == f()) {}
▲ x}
▲samples = 10000
▲print(t(round(d = 2, sapply(3:6, function(N) c(
▲ N = N,
▲ biased = mean(replicate(samples, randN(N))),
▲ unbiased = mean(replicate(samples, unbiased(function() randN(N)))))))))</lang>
▲Sample output:
▲<pre> N biased unbiased
▲[1,] 3 0.32 0.50
▲[2,] 4 0.24 0.50
▲[3,] 5 0.21 0.49
▲[4,] 6 0.16 0.51</pre>
=={{header|Racket}}==
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