A.計(jì)算三門課程成績(jī)的平均分
B.計(jì)算三門課程成績(jī)的標(biāo)準(zhǔn)差
C.計(jì)算三門課程成績(jī)的方差
D.計(jì)算三門課程成績(jī)的總分
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A.Both file iprovide cases
B.External file is keyed table
C.Working data file is keyed table
D.Indicate case source as variable
A.待合并的兩個(gè)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(gè)完全不相干的數(shù)據(jù)文件
C.在兩個(gè)數(shù)據(jù)文件中，數(shù)據(jù)含義相同的數(shù)據(jù)項(xiàng)最好起相同的變量名
D.待合并的兩個(gè)數(shù)據(jù)文件的個(gè)案數(shù)相同
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(gè)變量
C.數(shù)據(jù)文件中有變量視窗和數(shù)據(jù)視窗兩個(gè)視窗
D.SPSS數(shù)據(jù)文件可以用Excel打開
最新試題
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)？
A cumulative frequency distribution would provide（）.
時(shí)間序列構(gòu)成因素有哪些？分解的基本原理和思路是什么？
The number of class intervals in a frequency distribution is usually between （）.
Which of the following is best to show the percentage of a total budget that is spent on each category of items？（）
If data are grouped into intervals and the number of items in each group is listed, this could be called a （）
如果居民按報(bào)告期價(jià)格購(gòu)買商品需多支出40萬(wàn)元，報(bào)告期商品銷售額為200萬(wàn)元，則價(jià)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 approximate range of the number of phone calls arriving each hour？（）
企業(yè)生產(chǎn)一種產(chǎn)品需順次經(jīng)過(guò)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？
Descriptive statistics deals with methods of（）