| add_cov_to_formula | Add a Covariate to a Formula |
| block_boot_sample | Block Bootstrap |
| checkfun | Check Function |
| check_staggered | check_staggered |
| combine_ecdfs | Combine Two Distribution Functions |
| compare_binary | Compare Variables across Groups |
| cs2panel | Cross Section to Panel |
| drop_collinear | drop_collinear |
| drop_cov_from_formula | Drop a Covariate from a Formula |
| element_wise_mult | element_wise_mult |
| get_first_difference | get_first_difference |
| get_group | get_group |
| get_lagYi | get_lagYi |
| get_list_element | Return Particular Element from Each Element in a List |
| get_principal_components | get_principal_components |
| get_Yi1 | get_Yi1 |
| get_Yibar | get_Yibar |
| get_Yibar_pre | get_Yibar_pre |
| get_YiGmin1 | get_YiGmin1 |
| get_Yit | get_Yit |
| ids2rownum | Convert Vector of ids into Vector of Row Numbers |
| invert_ecdf | Invert Ecdf |
| lhs_vars | Left-hand Side Variables |
| make_balanced_panel | Balance a Panel Data Set |
| make_dist | Make a Distribution Function |
| multiplier_bootstrap | multiplier_bootstrap |
| mv_mult | Matrix-Vector Multiplication |
| orig2t | orig2t |
| panel2cs | Panel Data to Repeated Cross Sections |
| panel2cs2 | Panel Data to Repeated Cross Sections |
| rhs | Right-hand Side of Formula |
| rhs_vars | Right-hand Side Variables |
| source_all | source_all |
| subsample | Subsample of Observations from Panel Data |
| t2orig | t2orig |
| time_invariant_to_panel | time_invariant_to_panel |
| toformula | Variable Names to Formula |
| TorF | TorF |
| weighted_checkfun | Weighted Check Function |
| weighted_combine_list | weighted_combine_list |
| weighted_ecdf | Weighted Distribution Function |
| weighted_mean | Weighted Mean |
| weighted_quantile | weighted_quantile |