Palmer penguins

Linear model

lm(flipper_length_mm ~ body_mass_g + species, penguins)

## 
## Call:
## lm(formula = flipper_length_mm ~ body_mass_g + species, data = penguins)
## 
## Coefficients:
##      (Intercept)       body_mass_g  speciesChinstrap     speciesGentoo  
##        1.589e+02         8.402e-03         5.597e+00         1.568e+01