求一道英文的统计题答案!急用!谢谢!The equation of the least-squares regression line relating sales (€) and advertising is given as: Sales = 1000 + 3 Advertising expenditure. What do the figures “1000” and “3” tell us about the

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求一道英文的统计题答案!急用!谢谢!The equation of the least-squares regression line relating sales (€) and advertising is given as: Sales = 1000 + 3 Advertising expenditure. What do the figures “1000” and “3” tell us about the
求一道英文的统计题答案!急用!谢谢!
The equation of the least-squares regression line relating sales (€) and advertising is given as: Sales = 1000 + 3 Advertising expenditure. What do the figures “1000” and “3” tell us about the relationship between the variables?
答案最好是英文的.

求一道英文的统计题答案!急用!谢谢!The equation of the least-squares regression line relating sales (€) and advertising is given as: Sales = 1000 + 3 Advertising expenditure. What do the figures “1000” and “3” tell us about the
题目是这样：
给出销售额与广告支出费用之间的函数
S=1000+3x,x是自变量广告费.问1000和3告诉我们自变量和变量之间怎样的关系.
如果是我,我会回答：
两个变量存在着线性增长的正比关系.

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