Imagine that BCC would like to test the effectiveness of its tutoring programs. BCC hires several tutors who are experts in their subjects, but also hires actors who pretend to be “tutors” though they know nothing about those subjects. At the end of the semester, all of the 2,000 students being tutored say they understand their classes better, even the 1,000 students whose tutors were really actors.
The Independent Variable being tested in the above example is:
A.
How much the students improved
B.
The ability of the tutor
C.
The student’s final grades
D.
How much BCC pays the tutors