[問題] 事後分層的分層隨機抽樣法
鄭光甫教授說事後分層,每層樣本數n_h視為r.v,故可用統計學的理論得到其服從多項式
分配.想請教服從多項式分配,是因把每層的n_h視為一種現象,有k層故有k種現象而服從k
項分配?
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