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
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A.Name
B.Label
C.Values
D.Missing
A.定類型變量
B.定序型變量
C.定距型變量
A.SPSS數(shù)據(jù)文件和Excel表格是一樣的
B.數(shù)據(jù)文件中一行或一列是一個變量
C.數(shù)據(jù)文件中有變量視窗和數(shù)據(jù)視窗兩個視窗
D.SPSS數(shù)據(jù)文件可以用Excel打開
A.原始數(shù)據(jù)的組織方式
B.計數(shù)數(shù)據(jù)的組織形式
A.正確收集數(shù)據(jù)
B.加工整理數(shù)據(jù)
C.分析數(shù)據(jù)
D.明確分析目標(biāo)
最新試題
變量數(shù)列中，各組頻率之和應(yīng)（）
對全國各鐵路交通樞紐的貨運量、貨物種類等進行調(diào)查，以了解全國鐵路貨運概況。這種調(diào)查屬于（）
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 （）.
最能反映離散程度的指標(biāo)是（）
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？
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 （）.
A cumulative frequency polygon is also 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？（）
在組距數(shù)列中，下限就是（）
Which of the following is best to show the percentage of a total budget that is spent on each category of items？（）