The accompanying data Show the number of hours, x, studied for an exam and the grade received, y (y is measured in tens; that is, y = 8 means that the grade, rounded to the nearest 10 points, is 80). x233455566677778 y5565678698791089 100 Maple Generated Plot (a) Use the given scatter diagram to estimate rfor the sample data on the number of hours studied and the exam grade. (In) Calculate r. (Give your answer correct to two decimal places.) ,0 Type here to search