A.非參數(shù)檢驗(yàn)是統(tǒng)計(jì)推斷的基本內(nèi)容
B.在總體分布已知時,才可以使用非參數(shù)檢驗(yàn)方法
C.非參數(shù)檢驗(yàn)是對總體均值、方差等推斷的方法
D.非參數(shù)檢驗(yàn)是對總體分布形態(tài)進(jìn)行推斷的方法
E.在總體分布未知時可以使用非參數(shù)檢驗(yàn)方法
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A.控制變量不同水平下觀測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)同時為0
C.控制變量不同水平的變化沒有對觀測變量產(chǎn)生顯著影響
D.控制變量不同水平下的效應(yīng)不同時為0
E.控制變量不同水平下觀測變量各總體均值無顯著差異
A.兩個獨(dú)立樣本t檢驗(yàn)是檢驗(yàn)兩個總體的均值是否存在顯著差異
B.兩個獨(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.兩個獨(dú)立樣本t檢驗(yàn)中的數(shù)據(jù)要存放于兩個數(shù)據(jù)文件中
E.兩個獨(dú)立樣本t檢驗(yàn)中的數(shù)據(jù)要存放于同一個數(shù)據(jù)文件的兩個變量中
A.Mean
B.Range
C.Median
D.Sum
E.Mode
A.單個變量的頻數(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)算只針對一個個案
C.變量計(jì)算的結(jié)果會保存到一個新的變量中
D.變量計(jì)算一定會使用SPSS函數(shù)
E.變量計(jì)算可以只針對某一部分個案
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最新試題
A student achieves an 82 on the first test in a statistics course. From this, she assumes that her average at the end of the semester (after other tests) will be about 82. This is an example of ().
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 ().
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 ().
One rule that must always be followed in constructing frequency distributions is that ().
如果居民按報告期價格購買商品需多支出40萬元,報告期商品銷售額為200萬元,則價格指數(shù)為()
對某班級學(xué)生的生活狀況進(jìn)行統(tǒng)計(jì)調(diào)查,下列標(biāo)志中屬于不變標(biāo)志的是()
If the individual class frequency is divided by the total frequency, the result is the ().
常用的長期趨勢測定的方法有哪些?各有什么特點(diǎn)?
品合格率指標(biāo)是()
Which of the following is best to show the percentage of a total budget that is spent on each category of items?()