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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(guò)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(shuō)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
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(guò)去12年的有關(guān)數(shù)據(jù)。通過(guò)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
最新試題
One rule that must always be followed in constructing frequency distributions is that ().
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()
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?()
一個(gè)地區(qū)一定時(shí)期的商品零售額屬于()
某廠某年職工勞動(dòng)生產(chǎn)率為20000元,是歷史最高水平的1.2倍。這里的1.2倍是()
Descriptive statistics deals with methods of()
Which of the following statements is not true?()
變量數(shù)列中,各組頻率之和應(yīng)()
常用的長(zhǎng)期趨勢(shì)測(cè)定的方法有哪些?各有什么特點(diǎn)?
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 approximate range of the number of phone calls arriving each hour?()