A.觀測(cè)變量
B.控制變量
C.觀測(cè)變量的水平
D.控制變量的水平
您可能感興趣的試卷
你可能感興趣的試題
A.一個(gè)
B.二個(gè)
C.三個(gè)
D.四個(gè)
A.發(fā)病率
B.性別
C.年齡段
D.居住地區(qū)
A.Analyze→Compare Means→Means
B.Analyze→Compare Means→One-Samples T Test
C.Analyze→Compare Means→Independent-Samples T Test
D.Analyze→Compare Means→Paired-Samples T Test
A.Analyze→Descriptive Statistics→Frequencies
B.Analyze→Descriptive Statistics→Descriptives
C.Analyze→Descriptive Statistics→Crosstabs
D.Analyze→Descriptive Statistics→Ratio
A.Dichotomies
B.Categories
C.Counted
D.Range
最新試題
一個(gè)地區(qū)一定時(shí)期的商品零售額屬于（）
企業(yè)生產(chǎn)一種產(chǎn)品需順次經(jīng)過(guò)四個(gè)車間，這四個(gè)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？
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(wú)變化，則2019年職工總平均工資將（）
常用的長(zhǎng)期趨勢(shì)測(cè)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). The average number of absences per employee, calculated from the personnel data of all employees, is a （）.
為什么在計(jì)算平均指標(biāo)的基礎(chǔ)上還有必要進(jìn)一步計(jì)算變異指標(biāo)？
Which of the following is not the goal of descriptive statistics?（）
如果居民按報(bào)告期價(jià)格購(gòu)買商品需多支出40萬(wàn)元，報(bào)告期商品銷售額為200萬(wàn)元，則價(jià)格指數(shù)為（）
Which of the following statements is not true？（）
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？（）