A.組間平方和除以組內(nèi)平方和
B.組內(nèi)均方和除以組間均方
C.組間平方和除以總平方和
D.組間均方和除以組內(nèi)均方
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A.(1.645,1.96)
B.(0.40,0.50)
C.(0.45,0.55)
D.(0.419,0.481)
A.F0.05,10,20 = 1/F0.95,10,20
B.F0.05,10,20 = 1/F0.05,20,10
C.F0.95,10,20 = 1/F0.95,20,10
D.F0.95,10,20 = 1/F0.05,20,10
A.第一類錯誤被稱為棄真錯誤
B.第一類錯誤被稱為納偽錯誤
C.第二類錯誤是原假設(shè)不正確,但卻被接受的錯誤
D.第一類錯誤是原假設(shè)正確,但卻被拒絕的錯誤
A.2.14
B.5.66
C.7.28
D.15
A.7%
B.8%
C.9%
D.10%
最新試題
以2000年a0為最初水平,2016年an為最末水平,計(jì)算鋼產(chǎn)量的年平均發(fā)展速度時,須開()
Which of the following is best to show the percentage of a total budget that is spent on each category of items?()
One rule that must always be followed in constructing frequency distributions is that ().
最能反映離散程度的指標(biāo)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 ().
對某班級學(xué)生的生活狀況進(jìn)行統(tǒng)計(jì)調(diào)查,下列標(biāo)志中屬于不變標(biāo)志的是()
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?()
時間序列構(gòu)成因素有哪些?分解的基本原理和思路是什么?
在組距數(shù)列中,下限就是()
如果居民按報(bào)告期價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,則價格指數(shù)為()