1. Is the final course grade in a particular class affected by a student's attendance? The information shown below was calculated based on the final course grades and absences of 63 AP Statistics students (x is the number of days absent and y is the course grade). = 3.524 5, = 2.116 ) = 83.333 $y = 6.867 r = -.328 - a +bx A. Use the information provided to write the equation of the least-squares regression line. Show all calculations. (10 points) B. Interpret the correlation r = -.328. (4 points) AP Statistics Test Page 2 of 5 Bivariate Data: Regression Analysis and Two-Way Tables User Name: Instructor: Date: (print clearly) C. Interpret the slope of the least-squares regression line. (4 points) D. Interpret the y-intercept of the least-squares regression line. (4 points) E. Calculate ~ and interpret it. (6 points)