A.兩個獨立樣本t檢驗是檢驗兩個總體的均值是否存在顯著差異
B.兩個獨立樣本t檢驗要求樣本來自的總體服從或近似服從正態(tài)分布
C.兩個獨立樣本t檢驗中兩組樣本的樣本數(shù)可以不等
D.兩個獨立樣本t檢驗中的數(shù)據(jù)要存放于兩個數(shù)據(jù)文件中
E.兩個獨立樣本t檢驗中的數(shù)據(jù)要存放于同一個數(shù)據(jù)文件的兩個變量中
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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)計量計算
C.多變量交叉頻數(shù)分析
D.多變量的描述統(tǒng)計量計算
E.數(shù)據(jù)的多選項分析
A.變量計算可以對原有數(shù)據(jù)的分布形態(tài)進(jìn)行轉(zhuǎn)換
B.每次變量計算只針對一個個案
C.變量計算的結(jié)果會保存到一個新的變量中
D.變量計算一定會使用SPSS函數(shù)
E.變量計算可以只針對某一部分個案
A.變量名的字符數(shù)不能超過8個
B.變量名不區(qū)分大小寫字母
C.“all”是一個合法的變量名
D.變量名可以以漢字開頭
E.默認(rèn)的變量名是以“VER”開頭
A.定義數(shù)據(jù)結(jié)構(gòu)
B.錄入編輯數(shù)據(jù)
C.顯示管理報表
D.顯示管理圖形
E.管理數(shù)據(jù)
最新試題
One rule that must always be followed in constructing frequency distributions is that ().
The number of class intervals in a frequency distribution is usually between ().
A cumulative frequency polygon is also called ().
變量數(shù)列中,各組頻率之和應(yīng)()
常用的長期趨勢測定的方法有哪些?各有什么特點?
Which of the following is not the goal of descriptive statistics?()
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?
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 ().
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()
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 ().