| add_model_predictions | Add predictions to the data set. A dplyr compatible way to add predictions to a data set. | 
| add_model_residuals | Add model residuals | 
| agg_by_group | A convenient way to perform grouped operations | 
| drop_non_numeric | Drops non numeric columns from a data.frame object | 
| extract_model_info | Extract important model attributes | 
| fit_model | Fit and predict in a single function. | 
| fit_models | Fit several models with different response variables | 
| get_data_Stats | A pipe friendly way to get summary stats for exploratory data analysis | 
| get_exponent | Get the exponent of any number or numbers | 
| get_mode | A convenience function that returns the mode | 
| get_stats | A pipe friendly way to get summary stats for exploratory data analysis | 
| get_this | Helper function to easily access elements | 
| get_var_corr | Get correlations between variables | 
| get_var_corr_ | Get correlations for combinations | 
| multi_model_1 | Simultaneously train and predict on new data. | 
| multi_model_2 | Fit and predict in one function | 
| na_replace | Replace missing values | 
| na_replace_grouped | Replace NAs by group | 
| plot_corr | Plot a correlations matrix | 
| rowdiff | Get row differences between values | 
| select_col | A convenient selector gadget | 
| select_percentile | Get the row corresponding to a given percentile | 
| yields | Plant yields |