純節省數 的英文怎麼說

中文拼音 [chúnjiéxǐngshǔ]
純節省數 英文
net economic saving
  • : 形容詞1 (純凈; 不含雜質) pure; unmixed 2 (純粹; 單純) simple; pure and simple 3 (純熟) skil...
  • : 節構詞成分。
  • : 省動詞1 (檢查自己的思想行為) examine oneself critically 2 (探望; 問候) visit (esp one s pare...
  • : 數副詞(屢次) frequently; repeatedly
  • 節省 : economize; save; use sparingly; cut down on; retrench; gain; spare
  1. Two - stage sampling has only one chance of using the information provided by samples to determine the following plan. pure sequential sampling, however, could use sampling size sparingly. in addition, in some cases, pure sequential procedures have to be applied to acquire the confidence intervals which meet the demands

    兩步抽樣,只有一次機會利用樣本信息決定今後計劃,採用序貫則可使平均抽樣次,另外,在一定的分佈族中必須採用序貫才能取得滿足要求的區間估計。
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