求一道英文的统计题答案!急用!谢谢!
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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 relationship between the variables?
答案最好是英文的.
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!](/uploads/image/z/18079042-58-2.jpg?t=%E6%B1%82%E4%B8%80%E9%81%93%E8%8B%B1%E6%96%87%E7%9A%84%E7%BB%9F%E8%AE%A1%E9%A2%98%E7%AD%94%E6%A1%88%21%E6%80%A5%E7%94%A8%21%E8%B0%A2%E8%B0%A2%21)
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.
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.