LO Question 4 (1 point) > Saved () Listen Each year a nationally recognized publication conducts its "Survey of America's Best Graduate and Professional Schools." An academic advisor wants to predict the typical starting salary of a graduate at a top business school using GMAT score of the school as a predictor variable. A simple linear regression of SALARY versus GMAT using 25 data points shown below. 8 bo= -92040 by = 228 R2 = 0.66 r= 0.81 Give a practical interpretation of R2 = 0.66. 13 O Al We estimate SALARY to increase $.66 for every 1-point increase in GMAT. ( B) We can predict SALARY correctly 66% of the time using GMAT in a straight- line model. C) 66% of the differences in SALARY are caused by differences in GMAT scores. ( D) 66% of the sample variation in SALARY can be explained by using GMAT in a straight-line model