In order to understand the effectiveness of offering freesupplemental education on college campuses, students were asked howfrequently they went to the supplemental education and their finalgrades. On average, the more time the students spent at attendingsupplemental education, the worse their grades were.
1. If X is supplemental education and Y is final grade, explainwhat X causes Y would look like. First, fill in the correctvariable names in the statement \"X causes Y\". Then come up with aplausible explanation for how this could be happening.
2. If X is supplemental education and Y is final grade, explainwhat Y causes X would look like. First, fill in the correctvariable names in the statement \"Y causes X\". Then come up with aplausible explanation for how this could be happening.
3. If X is supplemental education and Y is final grade, explainwhat a third variable causes both X and Y would look like. First,fill in the correct variable names in the statement \"a thirdvariable causes both X and Y\". Then come up with a plausibleexplanation for how this could be happening.
