di_80_index             Calculate disproportionate impact per the 80%
                        index
di_iterate              Iteratively calculate disproportionate impact
                        using multiple method for many variables.
di_iterate_on_long      Iteratively calculate disproportionate impact
                        using multiple methods for a long and
                        summarized data set
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
ssm_cohort              Long summarized disaggregated data set
student_equity          Fake data on student equity
