A regional planner employed by a public university is studying the demographics of nine counties in the eastern region of an Atlantic seaboard state. She has gathered the following data: County Median Income Median Age Coastal A $ 46,757 50.1 0 B 48,213 49.9 0 C 46,588 57.9 1 D 47,586 52.5 0 E 34,097 37.7 0 F 30,963 45.1 1 G 33,632 43.5 1 H 35,971 48.2 1 I 30,131 33.5 1 Is there a linear relationship between the median income and median age?