判斷題在原始數(shù)據(jù)組織方式中,數(shù)據(jù)編輯窗口的一列稱為一個(gè)個(gè)案。
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常用的長(zhǎng)期趨勢(shì)測(cè)定的方法有哪些?各有什么特點(diǎn)?
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以2000年a0為最初水平,2016年an為最末水平,計(jì)算鋼產(chǎn)量的年平均發(fā)展速度時(shí),須開(kāi)()
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Which of the following is not the goal of descriptive statistics?()
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品合格率指標(biāo)是()
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If data are grouped into intervals and the number of items in each group is listed, this could be called a ()
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對(duì)全國(guó)各鐵路交通樞紐的貨運(yùn)量、貨物種類等進(jìn)行調(diào)查,以了解全國(guó)鐵路貨運(yùn)概況。這種調(diào)查屬于()
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什么是季節(jié)變動(dòng)?研究它的意義何在?如何測(cè)定季節(jié)變動(dòng)?
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The number of phone calls arriving at a switchboard each hour has been recorded and the following frequency distribution has been developed.What is the approximate range of the number of phone calls arriving each hour?()
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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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