performance: An R Package for Assessment, Comparison and Testing of Statistical Models

Abstract

A crucial part of statistical analysis is evaluating a model's quality and fit, or performance.During analysis, especially with regression models, investigating the fit of models to data also often involves selecting the best fitting model amongst many competing models.Upon investigation, fit indices should also be reported both visually and numerically to bring readers in on the investigative effort.The performance R-package (R Core Team, 2021) provides utilities for computing measures to assess model quality, many of which are not directly provided by R's base or stats packages.These include measures like R 2 , intraclass correlation coefficient (ICC), root mean squared error (RMSE), or functions to check for vexing issues like overdispersion, singularity, or zeroinflation.These functions support a large variety of regression models including generalized linear models, (generalized) mixed-effects models, their Bayesian cousins, and many others.

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Affiliated Institutions

• Universität Hamburg DE
• University of Chicago US
• Nanyang Technological University SG
• University Medical Center Hamburg-Eppendorf DE
• Ben-Gurion University of the Negev IL
• Max Planck Institute for Human Development DE

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