203: Scientific Reasoning
Quiz: Mill's Methods
Answer For Katie's Method of Difference
Sue, Bob, John, Carol, Tim, and Katie were discussing their literature grades after grades for the course were posted. They were unable to figure out the instructors assignment of grades. Sue, Carol, and Katie received As. Bob and John received a C, but Tim was assigned a D. John and Katie worked twenty hours a week at K-Mart, but none of the others had a job outside of school-work. Sue and Carol sat in the front row of the class; Katie sat in the second row; Bob, John and Tim sat toward the back of the class. In fact, Bob and John sat on the fourth row, and Tim sat on the last row of the class. Katie, John, and Bob typed their literature papers but the others did not.
Katie proposed the following chart. By the Method of Difference, what is the probable cause of the assignment of grades?
Katie should conclude that probably typing the literature paper is the cause, the effect, or an indispensable part of the cause of getting an A in the class.