| di_80_index | Calculate disproportionate impact per the 80% index |
| di_ppg | Calculate disproportionate impact per the percentage point gap (PPG) method. |
| di_ppg_iterate | Iteratively calculate disproportionate impact via the percentage point gap (PPG) method for many variables. |
| di_prop_index | Calculate disproportionate impact per the proportionality index (PI) method. |
| ppg_moe | Margin of error for the PPG |
| student_equity | Fake data on student equity |