合唱队
发表于 2025-4-1 04:25:49
Special Continuous Distributions,A continuous random variable X with density function . where −∞<μ<+∞ and σ>0, is said to be . with parameters μ and σ. and we write X~N(μ,σ. ).
fibroblast
发表于 2025-4-1 07:12:44
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明确
发表于 2025-4-1 11:25:56
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纠缠,缠绕
发表于 2025-4-1 15:55:02
Survey Sampling,The statistical theory of ., often simply called ., is concerned with the selection and analysis of samples selected from finite populations. The purpose of survey sampling is usually to estimate the average (or the sum) of the values of one or more variables for all units in the population.