“non-central chi-squared distribution”的概念、定义、翻译、参考文献-科学参考

non-central chi-squared distribution

Statistics

If Z₁, Z₂,…, Z_ν are independent standard normal variables (see normal distribution) and δ₁, δ₂,…, δ_ν are constants then X, given by $non-central chi-squared distribution$ is said to have a non-central chi-squared distribution with ν degrees of freedom and non-centrality parameter λ, where $non-central chi-squared distribution$ The probability density function f of X is given by $non-central chi-squared distribution$ where Γ is the gamma function. The distribution, which is unimodal, has mean (ν+λ) and variance 2(ν+2λ). If λ=0 then the distribution becomes the chi-squared distribution with ν degrees of freedom.

单词	non-central chi-squared distribution
释义	non-central chi-squared distribution Statistics If Z₁, Z₂,…, Z_ν are independent standard normal variables (see normal distribution) and δ₁, δ₂,…, δ_ν are constants then X, given by $non-central chi-squared distribution$ is said to have a non-central chi-squared distribution with ν degrees of freedom and non-centrality parameter λ, where $non-central chi-squared distribution$ The probability density function f of X is given by $non-central chi-squared distribution$ where Γ is the gamma function. The distribution, which is unimodal, has mean (ν+λ) and variance 2(ν+2λ). If λ=0 then the distribution becomes the chi-squared distribution with ν degrees of freedom.
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