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
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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
A.總體指標(biāo)
B.個(gè)體指標(biāo)
C.樣本指標(biāo)
D.子總體指標(biāo)
E.類指標(biāo)
A.存量指標(biāo)
B.流量指標(biāo)
C.水平指標(biāo)
D.實(shí)物指標(biāo)
E.價(jià)值指標(biāo)
最新試題
Which of the following is not the goal of descriptive statistics?（）
Which of the following statements is not true？（）
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(shí)，須開（）
一個(gè)地區(qū)一定時(shí)期的商品零售額屬于（）
The number of class intervals in a frequency distribution is usually between （）.
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？（）
If the individual class frequency is divided by the total frequency, the result is the （）.
Simon Arnett, Director of Human Resources, is exploring the causes of employee absenteeism at Buderim Bottling during the last operating year (1 January 2005 to 31 December 2005). Personnel records of 50 employees are selected for analysis. (The plant employs 250.) For this study, the average number days absent for these 50 employees is a （）.
變量數(shù)列中，各組頻率之和應(yīng)（）
One advantage of a stem and leaf plot over a frequency distribution is that （）.