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某公司估計(jì)在一定時(shí)間內(nèi)完成某項(xiàng)任務(wù)的概率如下:
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One rule that must always be followed in constructing frequency distributions is that ().
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某企業(yè)的生產(chǎn)計(jì)劃完成百分比采用如下分組,請(qǐng)指出哪項(xiàng)是正確的()
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在組距數(shù)列中,下限就是()
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If the individual class frequency is divided by the total frequency, the result is the ().
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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(lèi)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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A cumulative frequency polygon is also called ().
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A summary measure that is computed from a sample to describe a characteristic of the population is called()
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最能反映離散程度的指標(biāo)是()
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Which of the following is not the goal of descriptive statistics?()
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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)?
題型:?jiǎn)柎痤}