Graphical Comparison of TRACEs from CRAN R-packages for Ridge Regression

We discuss ten TRACE graphics generated using functions from four CRAN R-packages [genridge, lmridge, ridge or RXshrink] that implement diverse forms of Ridge Regression. The “10-Factor” data of Gorman and Toman (1966) are used to illustrate alternative “shrinkage” paths. “Efficient” shrinkage TRACEs, Obenchain (2022), are shown for not only all 10 X-predictors but also for the “Best Subset” of 7 X-predictors proposed by Gorman and Toman.