A.一致性
B.無偏性
C.有效性
D.充分性
E.穩(wěn)健性
您可能感興趣的試卷
你可能感興趣的試題
A.各組的變量值
B.各組的次數(shù)
C.各組的組中值
D.各組的頻率
E.各組的密度
A.均值大于中位數(shù)
B.均值小于眾數(shù)
C.中位數(shù)小于眾數(shù)
D.均值等于眾數(shù)
E.均值小于中位數(shù)
A.數(shù)學期望為0
B.標準差為1
C.方差為1
D.偏度系數(shù)為0
E.峰度系數(shù)為3
A.數(shù)學期望為p
B.數(shù)學期望為q
C.方差為p+q
D.方差為pq
E.方差為p/q
A.概率分布表
B.概率分布圖
C.概率分布函數(shù)式
D.回歸函數(shù)式
E.方差分析表
最新試題
If the individual class frequency is divided by the total frequency, the result is the ().
Descriptive statistics deals with methods of()
A cumulative frequency polygon is also called ().
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()
什么是季節(jié)變動?研究它的意義何在?如何測定季節(jié)變動?
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 ().
最能反映離散程度的指標是()
企業(yè)生產(chǎn)一種產(chǎn)品需順次經(jīng)過四個車間,這四個車間的廢品率分別為1.5%、2.0%、2.0%和1.0%。該企業(yè)生產(chǎn)這種產(chǎn)品的平均廢品率是多少?
品合格率指標是()