学堂威龙国语高清:求一道英文的统计题答案!急用!!谢谢!

来源:百度文库 编辑:高考问答 时间:2024/05/11 16:21:43
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.

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。