填空題反映順序變量數(shù)據(jù)的集中趨勢的指標可以用()數(shù)或()數(shù)來測度。
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A cumulative frequency distribution would provide().
題型:單項選擇題
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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對某班級學生的生活狀況進行統(tǒng)計調(diào)查,下列標志中屬于不變標志的是()
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某企業(yè)的生產(chǎn)計劃完成百分比采用如下分組,請指出哪項是正確的()
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One rule that must always be followed in constructing frequency distributions is that ().
題型:單項選擇題
If the individual class frequency is divided by the total frequency, the result is the ().
題型:單項選擇題
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?
題型:問答題
某企業(yè)2018年技術工占50%,2019年新招收了一批學徒工,使學徒工的比重增加了10%。假定全廠各級工資水平均無變化,則2019年職工總平均工資將()
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One advantage of a stem and leaf plot over a frequency distribution is that ().
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Which of the following statements is not true?()
題型:單項選擇題