A.全距
B.標(biāo)準(zhǔn)差
C.平均差
D.標(biāo)準(zhǔn)差系數(shù)
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A.提高
B.下降
C.不變
D.條件不夠,無法判斷
A.每個組的最小值
B.每個組的最大值
C.全距中的最大值
D.全距中的最小值
A.80%~89%,90%~99%,100%~109%,110%以上
B.80%以下,80.1%~90%,90.1%~100%,100.1%~110%
C.90%以下,90%~100%,100%~110%,110%以上
D.85%以下,85%~95%,95%~100%,105%~115%
A.小于1
B.等于1
C.大于1
D.不等于1
A.普查
B.抽樣調(diào)查
C.重點調(diào)查
D.典型調(diào)查
最新試題
Descriptive statistics deals with methods of()
最能反映離散程度的指標(biāo)是()
某企業(yè)的生產(chǎn)計劃完成百分比采用如下分組,請指出哪項是正確的()
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()
Which of the following statements is not true?()
A cumulative frequency distribution would provide().
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?()
If data are grouped into intervals and the number of items in each group is listed, this could be called a ()
常用的長期趨勢測定的方法有哪些?各有什么特點?
The number of class intervals in a frequency distribution is usually between ().