A.7%
B.8%
C.9%
D.10%
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A.樣本空間
B.事件
C.實(shí)驗(yàn)
D.概率
A.95%
B.89%
C.68%
D.99%
A.
B.
C.
D.
某汽車交易市場(chǎng)共發(fā)生了150項(xiàng)交易,將銷售記錄按付款方式及汽車類型加以區(qū)分如下:
如果從銷售記錄中隨機(jī)抽取一項(xiàng),該項(xiàng)是分期付款的概率是()
A.0.95
B.0.5
C.0.8
D.0.25
五位部門經(jīng)理的年收入如表:
要描述五位部門經(jīng)理的年收入的一般水平, 用()來(lái)測(cè)度這一集中趨勢(shì)比較合適。
A.眾數(shù)
B.中位數(shù)
C.平均數(shù)
D.極差
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最新試題
對(duì)全國(guó)各鐵路交通樞紐的貨運(yùn)量、貨物種類等進(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()
企業(yè)生產(chǎn)一種產(chǎn)品需順次經(jīng)過(guò)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?
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?
A cumulative frequency polygon is also called ().
One advantage of a stem and leaf plot over a frequency distribution is that ().
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?()
常用的長(zhǎng)期趨勢(shì)測(cè)定的方法有哪些?各有什么特點(diǎn)?
Which of the following is best to show the percentage of a total budget that is spent on each category of items?()
以2000年a0為最初水平,2016年an為最末水平,計(jì)算鋼產(chǎn)量的年平均發(fā)展速度時(shí),須開()
The number of class intervals in a frequency distribution is usually between ().