A.0.0896
B.0.2936
C.0.0413
D.0.0007
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A.a probability function
B.a random variable
C.thee xpected value
D.random function
A.0.4332
B.0.9332
C.0.0668
D.0.5668
A.1.1022
B.2
C.30
D.1.4847
A.12.5
B.8
C.0.64
D.1.25
最新試題
在組距數(shù)列中,下限就是()
If the individual class frequency is divided by the total frequency, the result is the ().
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()
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()
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()
Which of the following is best to show the percentage of a total budget that is spent on each category of items?()
Which of the following statements is not true?()
If data are grouped into intervals and the number of items in each group is listed, this could be called a ()
一個(gè)地區(qū)一定時(shí)期的商品零售額屬于()
變量數(shù)列中,各組頻率之和應(yīng)()