R Commander – linear regression

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We can fit various linear regression models using the R Commander GUI which also provides various ways to consider the model diagnostics to determine whether we need to consider a different model.

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The “Statistics” menu provides access to various statistical models via the “Fit models” sub-menu including:

  • Linear regression – the simplest scenario with a single response and one explanatory variable.
  • Linear model – various extensions to the simple linear regression model where we can specify a model formula using the Wilkinson-Rogers notation.

The “Models” menu provides access to various diagnostics for statistical models via the “Graphs” sub-menu including:

  • Basic diagnostic plots – four commonly used residual diagnostics including fitted values versus residuals and a normal probability plot for the residuals.

Other useful resources are provided on the Supplementary Material page.

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