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)
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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
A.數(shù)學(xué)期望為p
B.數(shù)學(xué)期望為q
C.方差為p+q
D.方差為pq
E.方差為p/q
A.概率分布表
B.概率分布圖
C.概率分布函數(shù)式
D.回歸函數(shù)式
E.方差分析表
A.柱狀圖
B.直方圖
C.折線圖
D.散點(diǎn)圖
E.立方圖
A.推斷誤差
B.不確定性
C.邏輯錯誤
D.不可行性
E.外延錯誤
最新試題
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()
One advantage of a stem and leaf plot over a frequency distribution is that ().
Which of the following is best to show the percentage of a total budget that is spent on each category of items?()
A summary measure that is computed from a sample to describe a characteristic of the population is called()
If data are grouped into intervals and the number of items in each group is listed, this could be called a ()
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 is not the goal of descriptive statistics?()
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 approximate range of the number of phone calls arriving each hour?()
什么是季節(jié)變動?研究它的意義何在?如何測定季節(jié)變動?