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一家電器銷(xiāo)售公司的管理人員認(rèn)為,每月的銷(xiāo)售額是廣告費(fèi)用的函數(shù),并想通過(guò)廣告費(fèi)用對(duì)月銷(xiāo)售額作出估計(jì)。用電視廣告費(fèi)用作自變量,銷(xiāo)售額作因變量進(jìn)行回歸分析。下表給出了相關(guān)的分析結(jié)果:
下列說(shuō)法正確的是()
A.廣告費(fèi)用每增加$1,000, 銷(xiāo)售額增加$1.420 211
B.廣告費(fèi)用每增加$1,000, 銷(xiāo)售額增加$1420. 211
C.廣告費(fèi)用每增加$1420.211, 銷(xiāo)售額增加$1000
D.廣告費(fèi)用每增加$1, 銷(xiāo)售額增加$363.689 1
最新試題
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()
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). The average number of absences per employee, calculated from the personnel data of all employees, is a ().
A cumulative frequency distribution would provide().
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?
A cumulative frequency polygon is also called ().
品合格率指標(biāo)是()
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()
對(duì)全國(guó)各鐵路交通樞紐的貨運(yùn)量、貨物種類(lèi)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()
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 ()