A.分類變量
B.分組變量
C.匯總變量
D.目標變量
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A.If condition is satisfied
B.Random sample of cases－Approxomately
C.Use filter Variable
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A.計算三門課程成績的平均分
B.計算三門課程成績的標準差
C.計算三門課程成績的方差
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A.Both file iprovide cases
B.External file is keyed table
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A.待合并的兩個數(shù)據(jù)文件的數(shù)據(jù)結(jié)構(gòu)完全相同
B.可以是兩個完全不相干的數(shù)據(jù)文件
C.在兩個數(shù)據(jù)文件中，數(shù)據(jù)含義相同的數(shù)據(jù)項最好起相同的變量名
D.待合并的兩個數(shù)據(jù)文件的個案數(shù)相同
A.Name
B.Label
C.Values
D.Missing
最新試題
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 （）.
品合格率指標是（）
Which of the following statements is not true？（）
以2000年a0為最初水平，2016年an為最末水平，計算鋼產(chǎn)量的年平均發(fā)展速度時，須開（）
變量數(shù)列中，各組頻率之和應（）
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（）
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？（）
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？（）
Descriptive statistics deals with methods of（）
要了解某地區(qū)全部大學生的就業(yè)情況，那么（）