A.中位數(shù)檢驗
B.曼-惠特尼U檢驗
C.K-S檢驗
D.Kruskal-Wallis檢驗
E.Jonckheere-Terpstra檢驗
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A.發(fā)病率
B.性別
C.年齡段
D.居住地區(qū)
E.工作環(huán)境
A.單樣本t檢驗是對樣本來自的總體的均值檢驗
B.單樣本t檢驗中要求數(shù)據(jù)只包含一個個案
C.單樣本t檢驗要求樣本來自的總體服從或近似服從正態(tài)分布
D.單樣本t檢驗中原假設(shè)是總體均值與檢驗值存在顯著差異
E.單樣本t檢驗可以對總體比例進(jìn)行檢驗
A.反映集中趨勢的描述統(tǒng)計量
B.反映總規(guī)??偹降拿枋鼋y(tǒng)計量
C.反映離散程度的描述統(tǒng)計量
D.反映分布形態(tài)的描述統(tǒng)計量
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)是將一個數(shù)據(jù)文件分成了若干個獨立的數(shù)據(jù)文件
D.數(shù)據(jù)拆分對后面的分析一直起作用,直到取消拆分為止
A.排序只針對某列變量進(jìn)行
B.多重排序中排序變量的次序與排序結(jié)果無關(guān)
C.排序是對整行數(shù)據(jù)排序
D.第一個排序變量也稱為主排序變量
E.通過數(shù)據(jù)排序能快捷地發(fā)現(xiàn)數(shù)據(jù)中的異常值
最新試題
最能反映離散程度的指標(biāo)是()
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?()
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?()
品合格率指標(biāo)是()
某廠某年職工勞動生產(chǎn)率為20000元,是歷史最高水平的1.2倍。這里的1.2倍是()
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 ().
Which of the following is best to show the percentage of a total budget that is spent on each category of items?()
為什么在計算平均指標(biāo)的基礎(chǔ)上還有必要進(jìn)一步計算變異指標(biāo)?
Descriptive statistics deals with methods of()
常用的長期趨勢測定的方法有哪些?各有什么特點?