modelr-package modelr-package %>% pipe add_predictions add_predictions add_predictors add_predictors add_residuals add_residuals bootstrap bootstrap crossv_kfold crossv_mc crossv_loo crossv_mc crossv_mc crossv_mc data_grid data_grid fit_with fit_with formulae formulas formulas formulas gather_predictions add_predictions gather_residuals add_residuals geom_ref_line geom_ref_line heights heights mae model-quality mape model-quality model-quality model-quality modelr modelr-package model_matrix model_matrix mse model-quality na.warn na.warn permute permute permute_ permute qae model-quality resample resample resample_bootstrap resample_bootstrap resample_partition resample_partition resample_permutation resample_permutation rmse model-quality rsae model-quality rsquare model-quality seq_range seq_range sim sim sim1 sim sim2 sim sim3 sim sim4 sim spread_predictions add_predictions spread_residuals add_residuals typical typical