Consider the following scenario to understand the relationship between marginal and average values. Suppose Brian is a professional basketball player, and his game log for free throws can be summarized in the following table. Fill in the columns with Brian's free-throw percentage for each game and his overall free-throw average after each game.

Game Game Result 1 2345 4/5 2/5 1/4 1/2 4/4 Total 4/5 6/10 7/14 8/16 12/20 Game Free-Throw Percentage Average Free-Throw Percentage 80 80 0000