Regression Estimation and Presentation R package rockchalk version 1.8.164 CRAN Task View: MixedModels (https://CRAN.R-project.org/view=MixedModels) A collection of functions for interpretation and presentation of regression analysis. These functions are used to produce the statistics lectures in <https://pj.freefaculty.org/guides/>. Includes regression diagnostics, regression tables, and plots of interactions and "moderator" variables. The emphasis is on "mean-centered" and "residual-centered" predictors. The vignette 'rockchalk' offers a fairly comprehensive overview. The vignette 'Rstyle' has advice about coding in R. The package title 'rockchalk' refers to our school motto, 'Rock Chalk Jayhawk, Go K.U.'. Software Depends: R (>= 2.10) Imports: grDevices, methods, lme4, carData, MASS, kutils, reformulas (>= 0.4.3) Suggests: tables, Hmisc, car, mvtnorm, scatterplot3d, HH Paul E. Johnson <pauljohn32@freefaculty.org> Comprehensive R Archive Network (CRAN) Paul E. Johnson [aut, cre], Gabor Grothendieck [ctb], Dimitri Papadopoulos OrfanosGabor [ctb] GPL (>= 3.0) 2026-04-16 application/tgz https://CRAN.R-project.org/package=rockchalk doi:10.32614/CRAN.package.rockchalk