A.全部大學(xué)畢業(yè)生是研究總體
B.大學(xué)畢業(yè)生總數(shù)是統(tǒng)計指標(biāo)
C.大學(xué)畢業(yè)生就業(yè)率是統(tǒng)計標(biāo)志
D.反映每位大學(xué)畢業(yè)生特征的職業(yè)是數(shù)量指標(biāo)
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A.全距
B.標(biāo)準(zhǔn)差
C.平均差
D.標(biāo)準(zhǔn)差系數(shù)
A.提高
B.下降
C.不變
D.條件不夠,無法判斷
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
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
最新試題
對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()
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 ().
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(diǎn)?
Descriptive statistics deals with methods of()
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%。假定全廠各級工資水平均無變化,則2019年職工總平均工資將()
企業(yè)生產(chǎn)一種產(chǎn)品需順次經(jīng)過四個車間,這四個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?
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?()
某廠某年職工勞動生產(chǎn)率為20000元,是歷史最高水平的1.2倍。這里的1.2倍是()
The number of class intervals in a frequency distribution is usually between ().