A.標(biāo)準(zhǔn)數(shù)值型
B.用戶自定義型
C.字符型
D.日期型
您可能感興趣的試卷
你可能感興趣的試題
A.變量名
B.對齊方式
C.字體大小
D.缺失值
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
變量數(shù)列中，各組頻率之和應(yīng)（）
對某班級學(xué)生的生活狀況進(jìn)行統(tǒng)計(jì)調(diào)查，下列標(biāo)志中屬于不變標(biāo)志的是（）
Which of the following statements is not true？（）
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 cumulative frequency of the third class？（）
Which of the following is not the goal of descriptive statistics?（）
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 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？（）
常用的長期趨勢測定的方法有哪些？各有什么特點(diǎn)？
要了解某地區(qū)全部大學(xué)生的就業(yè)情況，那么（）