For which of the following research problems would the ex post facto method be most appropriate?
A) How many students in the senior class are taking advanced placement (AP) classes?
B) Do students like the selection of AP classes offered?
C) Do students who take AP classes in high school earn better grades in college?
D) Which is the most popular AP class?

Question

Quizplus · Accepted Answer

Ex post facto studies are conducted on already existing data or circumstances. In this case, the data on students' grades in college and whether or not they took AP classes in high school already exist, so it would be appropriate to use the ex post facto method to analyze the relationship between the two variables. A, B, and D involve collecting new data or opinions and would not be appropriate for this method.

For Which of the Following Research Problems Would the Ex