某汽車生產(chǎn)商欲了解廣告費用X對銷售量Y的影響,收集了過去12年的有關數(shù)據(jù)。通過計算得到下面的有關結果:
當廣告費用為10000時,銷售量為多少?您可能感興趣的試卷
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時間序列構成因素有哪些?分解的基本原理和思路是什么?
The number of class intervals in a frequency distribution is usually between ().
要了解某地區(qū)全部大學生的就業(yè)情況,那么()
對某班級學生的生活狀況進行統(tǒng)計調(diào)查,下列標志中屬于不變標志的是()
One rule that must always be followed in constructing frequency distributions is that ().
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?()
為什么在計算平均指標的基礎上還有必要進一步計算變異指標?
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 ().
對全國各鐵路交通樞紐的貨運量、貨物種類等進行調(diào)查,以了解全國鐵路貨運概況。這種調(diào)查屬于()
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 ().