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某企業(yè)2018年技術(shù)工占50%,2019年新招收了一批學(xué)徒工,使學(xué)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()
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?
If the individual class frequency is divided by the total frequency, the result is the ().
常用的長期趨勢測定的方法有哪些?各有什么特點?
If data are grouped into intervals and the number of items in each group is listed, this could be called a ()
A cumulative frequency polygon is also called ().
對全國各鐵路交通樞紐的貨運量、貨物種類等進(jìn)行調(diào)查,以了解全國鐵路貨運概況。這種調(diào)查屬于()
如果居民按報告期價格購買商品需多支出40萬元,報告期商品銷售額為200萬元,則價格指數(shù)為()
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 cumulative frequency of the third class?()
以2000年a0為最初水平,2016年an為最末水平,計算鋼產(chǎn)量的年平均發(fā)展速度時,須開()