...The binomial distribution is also approximated by the Poisson distribution, where np = λ, when n is large, p is small, and np is of normal size. (3) Geometric distribution If the number of attempts until a success in Bernoulli trials is X , then P ( X = k ) = qk - 1p ( k = 1, 2, ...), which is the geometric distribution. (4) There are n1 red balls and n2 = n - n1 black balls in an urn. ... *Some of the terminology explanations that mention "geometric distribution" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…二項分布も,nが大きく,pが小さくてnpがふつうの大きさのときnp=λとしてポアソン分布で近似される。(3)幾何分布 ベルヌーイ試行で成功するまでの回数をXとすればP(X=k)=qk-1p(k=1,2,……)で,これが幾何分布である。(4)壺の中にn1個の赤球,n2=n-n1個の黒球がある。… ※「幾何分布」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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