A.0.19
B.0.81
C.0.6561
D.0.9
您可能感興趣的試卷
你可能感興趣的試題
A.直線趨勢
B.曲線趨勢
C.異方差
D.異常數(shù)據(jù)
使用最小二乘法估計(jì)得出的樣本回歸直線必然通過點(diǎn)()
A.(0,0)
B.(x,0)
C.(0,y)
D.(x,y)
A.y和x都是隨機(jī)變量
B.y是隨機(jī)變量,x是確定性變量
C.y是確定性變量,x是隨機(jī)變量
D.y和x都是確定性變量
A.屬性化
B.數(shù)量化
C.同質(zhì)化
D.差異化
A.等于0
B.等于總平方和
C.完全由觀測的隨機(jī)誤差引起
D.完全由各因子水平的差異引起
最新試題
某企業(yè)的生產(chǎn)計(jì)劃完成百分比采用如下分組,請指出哪項(xiàng)是正確的()
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 ().
要了解某地區(qū)全部大學(xué)生的就業(yè)情況,那么()
如果居民按報(bào)告期價(jià)格購買商品需多支出40萬元,報(bào)告期商品銷售額為200萬元,則價(jià)格指數(shù)為()
為什么在計(jì)算平均指標(biāo)的基礎(chǔ)上還有必要進(jìn)一步計(jì)算變異指標(biāo)?
If the individual class frequency is divided by the total frequency, the result is the ().
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 ().
Which of the following statements is not true?()
某企業(yè)2018年技術(shù)工占50%,2019年新招收了一批學(xué)徒工,使學(xué)徒工的比重增加了10%。假定全廠各級工資水平均無變化,則2019年職工總平均工資將()
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?()