College administrators at a small, private college noticed that students who had higher high school GPAs tend to have higher college GPAs. What are the explanatory variable and response variable for this relationship? 1. Explanatory variable: size of college Response variable: college GPA 2.Explanatory variable: high school GPA Response variable: college GPA 3. Explanatory variable: college GPA Response variable: high school GPA 4.Explanatory variable: type of college (private vs. public) Response variable: college GPA

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