| add_p | Add statistical test results to summary data |
| add_summary | Add summary statistics to a add_var object |
| add_var | Prepare variables for add_summary |
| equal_test | Test for Equality of Variances |
| format_p | Format p-values with significance markers |
| normal_test | Perform normality test on a variable |
| small_test | Check Sample Size Adequacy for Chi-Squared Test |