最新試題

如果居民按報(bào)告期價(jià)格購(gòu)買(mǎi)商品需多支出40萬(wàn)元,報(bào)告期商品銷(xiāo)售額為200萬(wàn)元,則價(jià)格指數(shù)為()

題型:?jiǎn)雾?xiàng)選擇題

企業(yè)生產(chǎn)一種產(chǎn)品需順次經(jīng)過(guò)四個(gè)車(chē)間,這四個(gè)車(chē)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:?jiǎn)柎痤}

A cumulative frequency polygon is also called ().

題型:?jiǎn)雾?xiàng)選擇題

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?()

題型:?jiǎn)雾?xiàng)選擇題

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(jí)工資水平均無(wú)變化,則2019年職工總平均工資將()

題型:?jiǎn)雾?xiàng)選擇題

One advantage of a stem and leaf plot over a frequency distribution is that ().

題型:?jiǎn)雾?xiàng)選擇題

Which of the following is not the goal of descriptive statistics?()

題型:?jiǎn)雾?xiàng)選擇題

在組距數(shù)列中,下限就是()

題型:?jiǎn)雾?xiàng)選擇題

最能反映離散程度的指標(biāo)是()

題型:?jiǎn)雾?xiàng)選擇題

品合格率指標(biāo)是()

題型:?jiǎn)雾?xiàng)選擇題