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二、將一大小為 2,000 之母體劃分成三層,其各層之大小 Nh、標準差 Sh 及每單位之調查費用 Ch 如下表所示。今擬採分層隨機抽樣法從此一母體中抽出大小為 400 之樣本,試分別採:推求各層之抽
問題詳情
二、將一大小為 2,000 之母體劃分成三層,其各層之大小 Nh、標準差 Sh 及每單位之調查費用 Ch 如下表所示。今擬採分層隨機抽樣法從此一母體中抽出大小為 400 之樣本,試分別採:
推求各層之抽出數。
【題組】
⑴ 比例配置法(Proportional allocation)(8 分)
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