AARP                    Prices for life insurance
Alder                   Nitrogen fixing by alder plants
Birth_weight            Birth weights and maternal data
College_grades          Grades at a small college
Crime                   Data from the US FBI Uniform Crime Report, 1960
HDD_Minneapolis         Heating degree days in Minneapolis, Minnesota,
                        USA
Houses_for_sale         Houses for sale
Mussels                 Metabolism of zebra mussels
NCI60_snippet           Gene expression in cancer cells.
Oil_history             Historical production of crude oil, worldwide
                        1880-2014
Runners                 Performance of runners in a ten-mile race as
                        they age
School_data             Simulated data bearing on school vouchers
Tadpoles                Swimming speed of tadpoles.
Trucking_jobs           Earnings of workers at a trucking company.
Used_Fords              Prices of used Ford automobiles in 2009
collinearity            Calculate measures of collinearity
cv_pred_error           Compare models with k-fold cross-validation
data_from_model         Extract component parts of models
effect_size             Calculate effect sizes in a model
ensemble                Create bootstrapped ensembles of a model
evaluate_model          Evaluate a model for specified inputs
fmodel                  Plot out model values
gf_point                gf_ plotting functions
gmodel                  Graph the function implicit in a model
reference_values        Compute sensible values from a data set for use
                        as a baseline
train                   Training statistical models
typical_levels          Find typical levels of explanatory variables in
                        a model/dataset.
