A.原假設(shè)是精確假設(shè)
B.備擇假設(shè)是精確假設(shè)
C.原假設(shè)是非精確假設(shè)
D.備擇假設(shè)是非精確假設(shè)
E.樣本給定
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A.總體中各個個體之間的差異程度
B.樣本容量的大小
C.總體中個體數(shù)的多少
D.樣本的抽取方式
E.抽樣調(diào)查中登記誤差的大小
A.一致性
B.無偏性
C.有效性
D.充分性
E.穩(wěn)健性
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(xué)期望為0
B.標(biāo)準(zhǔn)差為1
C.方差為1
D.偏度系數(shù)為0
E.峰度系數(shù)為3
最新試題
品合格率指標(biāo)是()
If the individual class frequency is divided by the total frequency, the result is the ().
One rule that must always be followed in constructing frequency distributions is that ().
A cumulative frequency polygon is also called ().
Which of the following is best to show the percentage of a total budget that is spent on each category of items?()
對某班級學(xué)生的生活狀況進(jìn)行統(tǒng)計調(diào)查,下列標(biāo)志中屬于不變標(biāo)志的是()
Which of the following statements is not true?()
變量數(shù)列中,各組頻率之和應(yīng)()
Which of the following is not the goal of descriptive statistics?()
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()