判斷題有效百分比在數(shù)值上不會小于百分比。
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要了解某地區(qū)全部大學生的就業(yè)情況,那么()
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在組距數(shù)列中,下限就是()
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Descriptive statistics deals with methods of()
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企業(yè)生產(chǎn)一種產(chǎn)品需順次經(jīng)過四個車間,這四個車間的廢品率分別為1.5%、2.0%、2.0%和1.0%。該企業(yè)生產(chǎn)這種產(chǎn)品的平均廢品率是多少?
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Which of the following is not the goal of descriptive statistics?()
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對全國各鐵路交通樞紐的貨運量、貨物種類等進行調(diào)查,以了解全國鐵路貨運概況。這種調(diào)查屬于()
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One rule that must always be followed in constructing frequency distributions is that ().
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Which of the following is best to show the percentage of a total budget that is spent on each category of items?()
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為什么在計算平均指標的基礎上還有必要進一步計算變異指標?
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Which of the following statements is not true?()
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