A.發(fā)病率
B.性別
C.年齡段
D.居住地區(qū)
E.工作環(huán)境
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A.單樣本t檢驗(yàn)是對(duì)樣本來(lái)自的總體的均值檢驗(yàn)
B.單樣本t檢驗(yàn)中要求數(shù)據(jù)只包含一個(gè)個(gè)案
C.單樣本t檢驗(yàn)要求樣本來(lái)自的總體服從或近似服從正態(tài)分布
D.單樣本t檢驗(yàn)中原假設(shè)是總體均值與檢驗(yàn)值存在顯著差異
E.單樣本t檢驗(yàn)可以對(duì)總體比例進(jìn)行檢驗(yàn)
A.反映集中趨勢(shì)的描述統(tǒng)計(jì)量
B.反映總規(guī)??偹降拿枋鼋y(tǒng)計(jì)量
C.反映離散程度的描述統(tǒng)計(jì)量
D.反映分布形態(tài)的描述統(tǒng)計(jì)量
A.數(shù)據(jù)拆分選擇的菜單是Data-Split File
B.數(shù)據(jù)拆分的本質(zhì)就是對(duì)數(shù)據(jù)按拆分變量進(jìn)行排序
C.數(shù)據(jù)拆分的本質(zhì)是將一個(gè)數(shù)據(jù)文件分成了若干個(gè)獨(dú)立的數(shù)據(jù)文件
D.數(shù)據(jù)拆分對(duì)后面的分析一直起作用,直到取消拆分為止
A.排序只針對(duì)某列變量進(jìn)行
B.多重排序中排序變量的次序與排序結(jié)果無(wú)關(guān)
C.排序是對(duì)整行數(shù)據(jù)排序
D.第一個(gè)排序變量也稱為主排序變量
E.通過(guò)數(shù)據(jù)排序能快捷地發(fā)現(xiàn)數(shù)據(jù)中的異常值
A. 通用文件,可以被通用軟件如寫字板等打開(kāi)
B. 有結(jié)構(gòu)的數(shù)據(jù)文件
C. 只能在SPSS中才能打開(kāi)
D. 數(shù)據(jù)文件的擴(kuò)展名是.sav
最新試題
最能反映離散程度的指標(biāo)是()
某班的學(xué)習(xí)按考試成績(jī)分為60分以下,60-70,70-80,80-90,90-100,這種分組()
變量數(shù)列中,各組頻率之和應(yīng)()
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?()
Descriptive statistics deals with methods of()
某廠某年職工勞動(dòng)生產(chǎn)率為20000元,是歷史最高水平的1.2倍。這里的1.2倍是()
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). The average number of absences per employee, calculated from the personnel data of all employees, is a ().
One advantage of a stem and leaf plot over a frequency distribution is that ().
A summary measure that is computed from a sample to describe a characteristic of the population is called()
Which of the following is not the goal of descriptive statistics?()