# Marginal Analysis

## Try It

- Suppose the relationship between your study time and your grade on a History midterm is given by the following table:

If you study for | Your grade will be |
---|---|

4 hours | 82 |

5 hours | 91 |

6 hours | 94 |

What is the "marginal grade improvement (MGI)" of the 5

^{th}hour of studying?____ points

2. What is the "marginal grade improvement (MGI)" of the 6^{th} hour of studying?

____ points

3. Why might the MGI be diminishing?