If individuals who sit in the back of the classroom receive lower grades on average than
the rest of the class, does that mean that sitting in the back of a classroom causes one to
perform poorly on exams?
a. Not necessarily. The reoccurrence of a certain relationship between two variables
does not necessarily imply causation.
b. It is not possible for an economist to determine causation between variables.
c. The reoccurrence of such a relationship is sufficient evidence that sitting in the back
of a classroom will lead to lower grades.
d. The reoccurrence of such a relationship is sufficient evidence that students who
receive low grades prefer to keep a low profile and always sit in the back of the
classroom.
If the wage rate is fixed at a certain level, the:
a. total wage cost curve is horizontal.
b. total wage cost curve is a straight upward sloping line.
c. MP must be constant.
d. total wage cost curve will increase at an increasing rate.
e. total wage cost curve will increase at a decreasing rate.