Decision Tree degree none bachelors masters doctorate income income income income 50K 100K 25K 75K 25K =25K 50to100K 50K =50K 25 to 75K bad average good bad average good excellent Database System Concepts-6th Edition 20.14 @Silberschatz,Korth and SudarshanDatabase System Concepts - 6 20.14 ©Silberschatz, Korth and Sudarshan th Edition Decision Tree