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
對(duì)全國(guó)各鐵路交通樞紐的貨運(yùn)量、貨物種類等進(jìn)行調(diào)查,以了解全國(guó)鐵路貨運(yùn)概況。這種調(diào)查屬于()
One rule that must always be followed in constructing frequency distributions is that ().
時(shí)間序列構(gòu)成因素有哪些?分解的基本原理和思路是什么?
某企業(yè)的生產(chǎn)計(jì)劃完成百分比采用如下分組,請(qǐng)指出哪項(xiàng)是正確的()
A summary measure that is computed from a sample to describe a characteristic of the population is called()
如果居民按報(bào)告期價(jià)格購(gòu)買商品需多支出40萬(wàn)元,報(bào)告期商品銷售額為200萬(wàn)元,則價(jià)格指數(shù)為()
變量數(shù)列中,各組頻率之和應(yīng)()
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(jí)工資水平均無(wú)變化,則2019年職工總平均工資將()
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 ().
對(duì)某班級(jí)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()