Let F(x) be the distribution function of the random variable X. In other words, F(x) = P(X < x). In this case, The characteristic function is determined by the distribution function. The characteristic function of the binomial distribution B(n,p) is (pe it +q) n , the characteristic function of the Poisson distribution P(λ) is exp(λe it -1), and the characteristic function of the normal distribution N(m,σ 2 ) is exp(imt-(σ 2 /2)t 2 ). [Shigeru Furuya] Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend |
確率変数Xの分布関数をF(x)とする。すなわちF(x)=P(X<x)とする。このとき 特性関数は分布関数によって決まる。二項分布B(n,p)の特性関数は(peit+q)n、ポアソン分布P(λ)の特性関数はexp(λeit-1)、正規分布N(m,σ2)の特性関数はexp(imt-(σ2/2)t2)である。 [古屋 茂] 出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例 |
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