A.控制變量不同水平下觀測(cè)變量各總體均值差異顯著
B.控制變量不同水平下的效應(yīng)同時(shí)為0
C.控制變量不同水平的變化沒有對(duì)觀測(cè)變量產(chǎn)生顯著影響
D.控制變量不同水平下的效應(yīng)不同時(shí)為0
E.控制變量不同水平下觀測(cè)變量各總體均值無顯著差異
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A.兩個(gè)獨(dú)立樣本t檢驗(yàn)是檢驗(yàn)兩個(gè)總體的均值是否存在顯著差異
B.兩個(gè)獨(dú)立樣本t檢驗(yàn)要求樣本來自的總體服從或近似服從正態(tài)分布
C.兩個(gè)獨(dú)立樣本t檢驗(yàn)中兩組樣本的樣本數(shù)可以不等
D.兩個(gè)獨(dú)立樣本t檢驗(yàn)中的數(shù)據(jù)要存放于兩個(gè)數(shù)據(jù)文件中
E.兩個(gè)獨(dú)立樣本t檢驗(yàn)中的數(shù)據(jù)要存放于同一個(gè)數(shù)據(jù)文件的兩個(gè)變量中
A.Mean
B.Range
C.Median
D.Sum
E.Mode
A.單個(gè)變量的頻數(shù)分析
B.單變量的描述統(tǒng)計(jì)量計(jì)算
C.多變量交叉頻數(shù)分析
D.多變量的描述統(tǒng)計(jì)量計(jì)算
E.數(shù)據(jù)的多選項(xiàng)分析
A.變量計(jì)算可以對(duì)原有數(shù)據(jù)的分布形態(tài)進(jìn)行轉(zhuǎn)換
B.每次變量計(jì)算只針對(duì)一個(gè)個(gè)案
C.變量計(jì)算的結(jié)果會(huì)保存到一個(gè)新的變量中
D.變量計(jì)算一定會(huì)使用SPSS函數(shù)
E.變量計(jì)算可以只針對(duì)某一部分個(gè)案
A.變量名的字符數(shù)不能超過8個(gè)
B.變量名不區(qū)分大小寫字母
C.“all”是一個(gè)合法的變量名
D.變量名可以以漢字開頭
E.默認(rèn)的變量名是以“VER”開頭
最新試題
企業(yè)生產(chǎn)一種產(chǎn)品需順次經(jīng)過四個(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?
One rule that must always be followed in constructing frequency distributions is that ().
Which of the following is not the goal of descriptive statistics?()
品合格率指標(biāo)是()
One advantage of a stem and leaf plot over a frequency distribution is that ().
要了解某地區(qū)全部大學(xué)生的就業(yè)情況,那么()
A summary measure that is computed from a sample to describe a characteristic of the population is called()
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 approximate range of the number of phone calls arriving each hour?()
Which of the following statements is not true?()
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)?