A.每個組的最小值
B.每個組的最大值
C.全距中的最大值
D.全距中的最小值
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A.80%~89%,90%~99%,100%~109%,110%以上
B.80%以下,80.1%~90%,90.1%~100%,100.1%~110%
C.90%以下,90%~100%,100%~110%,110%以上
D.85%以下,85%~95%,95%~100%,105%~115%
A.小于1
B.等于1
C.大于1
D.不等于1
A.普查
B.抽樣調(diào)查
C.重點調(diào)查
D.典型調(diào)查
A.年齡
B.學(xué)習(xí)成績
C.專業(yè)
D.個人愛好
A.是等距分組
B.第一組假定下限是0
C.相鄰組限是重疊的
D.分組標(biāo)志為連續(xù)型變量
E.某學(xué)生的成績80分應(yīng)歸在70-80這一組
最新試題
Descriptive statistics deals with methods of()
某企業(yè)的生產(chǎn)計劃完成百分比采用如下分組,請指出哪項是正確的()
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 ().
什么是季節(jié)變動?研究它的意義何在?如何測定季節(jié)變動?
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 ().
常用的長期趨勢測定的方法有哪些?各有什么特點?
在組距數(shù)列中,下限就是()
對全國各鐵路交通樞紐的貨運量、貨物種類等進行調(diào)查,以了解全國鐵路貨運概況。這種調(diào)查屬于()
A cumulative frequency distribution would provide().
One advantage of a stem and leaf plot over a frequency distribution is that ().