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(cuò)誤
D.不可行性
E.外延錯(cuò)誤
最新試題
要了解某地區(qū)全部大學(xué)生的就業(yè)情況，那么（）
One advantage of a stem and leaf plot over a frequency distribution is that （）.
Descriptive statistics deals with methods of（）
企業(yè)生產(chǎn)一種產(chǎn)品需順次經(jīng)過(guò)四個(gè)車(chē)間，這四個(gè)車(chē)間的廢品率分別為1.5%、2.0%、2.0%和1.0%。該企業(yè)生產(chǎn)這種產(chǎn)品的平均廢品率是多少？
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？（）
某班的學(xué)習(xí)按考試成績(jī)分為60分以下，60-70，70-80，80-90，90-100，這種分組（）
The number of class intervals in a frequency distribution is usually between （）.
常用的長(zhǎng)期趨勢(shì)測(cè)定的方法有哪些？各有什么特點(diǎn)？
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 （）.
A summary measure that is computed from a sample to describe a characteristic of the population is called（）