X wants to know whether a problem-based approach to
result in higher academic performance than his traditional method.
X randomly selected students to to the problem-based method economic course.
At the end of the teaching session, students in this course complete an exam (max.
30 points) and X got the average score from the problem-based method condtion
only.

1. What is IV? What is the measurement variable of IV? (2pts)

2. What is DV? What is the measurement variable of DV? (2pts)

Did you find the current research design has a problem to prove the causation? If
yes. please answer the following.

3. what is the name of the current experimental design? (2 pts)

4. How could you improve the current research design in order to prove the causation? (2 pts)

What is the name of your improved experimental design? (2pts)

5. In order to support the hypothesis, what should the result be? Briefly explain. (3
pts)