A.均大于0
B.均等于0
C.均小于0
D.均不為0
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B.確定性的數(shù)量依存關(guān)系
C.非線性函數(shù)依存關(guān)系
D.非確定性的數(shù)量依存關(guān)系
A.相互關(guān)聯(lián)
B.互不相關(guān)
C.計量逐步精確
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B.左側(cè)檢驗
C.雙側(cè)檢驗
D.上側(cè)檢驗
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B.非精確假設(shè)
C.復(fù)合假設(shè)
D.備擇假設(shè)
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最新試題
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Descriptive statistics deals with methods of（）
要了解某地區(qū)全部大學(xué)生的就業(yè)情況，那么（）
如果居民按報告期價格購買商品需多支出40萬元，報告期商品銷售額為200萬元，則價格指數(shù)為（）
一個地區(qū)一定時期的商品零售額屬于（）
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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（）
If data are grouped into intervals and the number of items in each group is listed, this could be called a （）
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