一家電器銷售公司的管理人員認(rèn)為,每月的銷售額是廣告費(fèi)用的函數(shù),并想通過廣告費(fèi)用對(duì)月銷售額作出估計(jì)。用電視廣告費(fèi)用作自變量,銷售額作因變量進(jìn)行回歸分析。下表給出了相關(guān)的分析結(jié)果:
下列說法正確的是()
A.廣告費(fèi)用每增加$1,000, 銷售額增加$1.420 211
B.廣告費(fèi)用每增加$1,000, 銷售額增加$1420. 211
C.廣告費(fèi)用每增加$1420.211, 銷售額增加$1000
D.廣告費(fèi)用每增加$1, 銷售額增加$363.689 1
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你可能感興趣的試題
某汽車生產(chǎn)商想要了解廣告費(fèi)用 (X) 對(duì)銷售量 (Y) 的影響,收集了過去12年的有關(guān)數(shù)據(jù)。通過計(jì)算得到下面的ANOVA表,其中顯著水平α=0.05。
方差分析表中虛線所代表的數(shù)據(jù)分別為()
A.4015.807和399.1
B.4015.807和0.0025
C.0.9755和399.1
D.0.0244和0.0025
A.1065
B.1066
C.1067
D.1068
A.Z<-1.96
B.Z>1.96
C.Z>1.65
D.Z<-1.65
A.7~13
B.8~12
C.9~11
D.9.5~10.5
A.右側(cè)檢驗(yàn)
B.左側(cè)檢驗(yàn)
C.雙側(cè)檢驗(yàn)
D.上側(cè)檢驗(yàn)
最新試題
The number of class intervals in a frequency distribution is usually between ().
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 rule that must always be followed in constructing frequency distributions is that ().
品合格率指標(biāo)是()
Which of the following is not the goal of descriptive statistics?()
Descriptive statistics deals with methods of()
要了解某地區(qū)全部大學(xué)生的就業(yè)情況,那么()
Which of the following statements is not true?()
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 ().