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（）來測度這一集中趨勢比較合適。
A.眾數(shù)
B.中位數(shù)
C.平均數(shù)
D.極差
最新試題
If data are grouped into intervals and the number of items in each group is listed, this could be called a （）
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 approximate range of the number of phone calls arriving each hour？（）
Which of the following statements is not true？（）
常用的長期趨勢測定的方法有哪些？各有什么特點(diǎn)？
什么是季節(jié)變動(dòng)？研究它的意義何在？如何測定季節(jié)變動(dòng)？
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 rule that must always be followed in constructing frequency distributions is that （）.
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（）
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？（）
要了解某地區(qū)全部大學(xué)生的就業(yè)情況，那么（）