the marginal is less than the average, the average must be falling. For
example, if you had a 3.6 cumulative grade point average (GPA) last
semester and in this (marginal) semester you get only a 3.0 GPA, your
cumulative GPA will fall. To increase your cumulative GPA, you must
score better in this (marginal) semester than you have on average in the
past—that is, to increase the average, the marginal must be greater than
the average.
