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
您可能感興趣的試卷
你可能感興趣的試題
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
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)
最新試題
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()
要了解某地區(qū)全部大學(xué)生的就業(yè)情況,那么()
最能反映離散程度的指標(biāo)是()
變量數(shù)列中,各組頻率之和應(yīng)()
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()
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 ().
One advantage of a stem and leaf plot over a frequency distribution is that ().
Which of the following is not the goal of descriptive statistics?()
A cumulative frequency distribution would provide().