| AICc_permanova2 | Calculate AICc for a permutational multivariate analysis of variance (PERMANOVA) | 
| akaike_adjusted_rsq | Akaike-Adjusted R Squared Calculation with Model Averaging | 
| filter_vif | Filters out equations with high multicollinearity | 
| fit_models | Fit PERMANOVA models and arrange by AICc | 
| make_models | Create models with different combinations of variables | 
| select_models | Select models based on AICc and VIF. | 
| VIF | Get Maximum Variance Inflation Factor (VIF) from a Model |