A researcher is studying her students' test scores and exploring whether the test scores are related to the amount of coffee (number of cups) a student consumes before the exam. The researcher uses a bivariate regression model to study how test scores are related to coffee consumption. The bivariate regression equation is: y = a + b(x). Identify and match the variables in the analysis with the correct term in the regression equation. Which term in the regression equation represents the test scores? _ I X Which term in the regression equation represents the average change in test score given a one-cup increase in coffee consumed? Which term in the regression equation represents the constant (also known as the y-intercept)? a y b Which term in the regression equation represents the number of coffee cups consumed? Choose