將某公司的35名業(yè)務(wù)員隨機(jī)分成5組，分別選用一種培訓(xùn)方法進(jìn)行培訓(xùn)，經(jīng)過一段時(shí)間的跟蹤調(diào)查，得到了這35名業(yè)務(wù)員的銷售數(shù)據(jù)，對(duì)銷售數(shù)據(jù)進(jìn)行單因素方差分析，結(jié)果如下：
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A.中位數(shù)檢驗(yàn)
B.曼－惠特尼U檢驗(yàn)
C.K－S檢驗(yàn)
D.Kruskal-Wallis檢驗(yàn)
E.Jonckheere-Terpstra檢驗(yàn)
A.發(fā)病率
B.性別
C.年齡段
D.居住地區(qū)
E.工作環(huán)境
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對(duì)全國各鐵路交通樞紐的貨運(yùn)量、貨物種類等進(jìn)行調(diào)查，以了解全國鐵路貨運(yùn)概況。這種調(diào)查屬于（）
One advantage of a stem and leaf plot over a frequency distribution is that （）.
A cumulative frequency polygon is also called （）.
要了解某地區(qū)全部大學(xué)生的就業(yè)情況，那么（）
Simon Arnett, Director of Human Resources, is exploring the causes of employee absenteeism at Buderim Bottling during the last operating year (1 January 2005 to 31 December 2005). The average number of absences per employee, calculated from the personnel data of all employees, is a （）.
If the individual class frequency is divided by the total frequency, the result is the （）.
某廠某年職工勞動(dòng)生產(chǎn)率為20000元，是歷史最高水平的1.2倍。這里的1.2倍是（）
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)工資水平均無變化，則2019年職工總平均工資將（）
常用的長期趨勢測定的方法有哪些？各有什么特點(diǎn)？
Simon Arnett, Director of Human Resources, is exploring the causes of employee absenteeism at Buderim Bottling during the last operating year (1 January 2005 to 31 December 2005). Personnel records of 50 employees are selected for analysis. (The plant employs 250.) For this study, the average number days absent for these 50 employees is a （）.