A.變量名
B.對齊方式
C.字體大小
D.缺失值
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A.明確分析目標(biāo)
B.建立數(shù)據(jù)文件
C.加工整理數(shù)據(jù)
D.數(shù)據(jù)分析
A.數(shù)據(jù)編輯窗口
B.結(jié)果輸出窗口
C.語句窗口
D.命令窗口
最新試題
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()
一個地區(qū)一定時期的商品零售額屬于()
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 ().
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?()
變量數(shù)列中,各組頻率之和應(yīng)()
要了解某地區(qū)全部大學(xué)生的就業(yè)情況,那么()
品合格率指標(biāo)是()
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()
If data are grouped into intervals and the number of items in each group is listed, this could be called a ()