Question: 4.1 Explanatory and response variables? You have data on a large group of college stu dents. Here are four pairs of variables measured on these

4.1 Explanatory and response variables? You have data on a large group of college stu dents. Here are four pairs of variables measured on these students. For each pair, is it more reasonable to simply explore the relationship between the two variables or to view one of the variables as an explanatory variable and the other as a response variable? In the latter case, which is the explanatory variable and which is the response variable?

(a) Amount of time spent studying for a statistics exam and grade on the exam.

(b) Weight in kilograms and height in centimeters.

(c) Hours per week of extracurricular activities and grade point average.

(d) Score on the SAT Mathematics exam and score on the SAT Critical Reading exam.

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