A.足夠大時(shí)
B.足夠小時(shí)
C.無論大與小
D.無法判斷
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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,()來測(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
A.大于
B.小于
C.等于
D.不能確定大于或小于
A.純隨機(jī)抽樣
B.等距抽樣
C.分層抽樣
D.整群抽樣
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One advantage of a stem and leaf plot over a frequency distribution is that ().
A student achieves an 82 on the first test in a statistics course. From this, she assumes that her average at the end of the semester (after other tests) will be about 82. This is an example of ().
在組距數(shù)列中,下限就是()
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?()
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Which of the following is not the goal of descriptive statistics?()
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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()