A.分類變量
B.分組變量
C.匯總變量
D.目標(biāo)變量
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最新試題
If the individual class frequency is divided by the total frequency, the result is the ().
One rule that must always be followed in constructing frequency distributions is that ().
最能反映離散程度的指標(biāo)是()
Which of the following statements is not true?()
如果居民按報(bào)告期價(jià)格購買商品需多支出40萬元,報(bào)告期商品銷售額為200萬元,則價(jià)格指數(shù)為()
時(shí)間序列構(gòu)成因素有哪些?分解的基本原理和思路是什么?
One advantage of a stem and leaf plot over a frequency distribution is that ().
企業(yè)生產(chǎn)一種產(chǎn)品需順次經(jīng)過四個(gè)車間,這四個(gè)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?
在組距數(shù)列中,下限就是()
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()