maxpepperdine / esm244_w2024_lab5 Goto Github PK

Prepared by: Allison Horst and Casey O'Hara

Palmer penguins data from `palmerpenguins package:

Horst AM, Hill AP, Gorman KB (2020). palmerpenguins: Palmer Archipelago (Antarctica) penguin data. R package version 0.1.0. https://allisonhorst.github.io/palmerpenguins/. doi: 10.5281/zenodo.3960218.

In this lab, we several candidate linear models to predict penguin body mass from a set of variables, and then apply various methods to compare and select among the candidate models.

• Compare models using information criteria
  • Akaike Information Criteria (AIC and AICc)
  • Bayesian Information Criteria (BIC)
• Compare models using k-fold cross-validation
• Practice writing functions
  • function to calculate RMSE given predicted and observed values
  • function to train and test a single fold in a cross-validation
• Perform iterations using for-loops and purrr