gnu: Add r-cardata.

* gnu/packages/statistics.scm (r-cardata): New variable.

gnu/packages/statistics.scm

@@ -5123,6 +5123,26 @@ modification of F-tests for linear mixed effects models and a parametric
 bootstrap test for generalized linear mixed models.")
     (license license:gpl2+)))
 
+(define-public r-cardata
+  (package
+    (name "r-cardata")
+    (version "3.0-1")
+    (source
+     (origin
+       (method url-fetch)
+       (uri (cran-uri "carData" version))
+       (sha256
+        (base32
+         "193pdwgw6gk19v7swk1kwphg3vqdmpsgi555g9nyz93sa39j7r8j"))))
+    (properties `((upstream-name . "carData")))
+    (build-system r-build-system)
+    (home-page "https://r-forge.r-project.org/projects/car/")
+    (synopsis "Data Sets for the book Companion to Applied Regression")
+    (description
+     "This package provides datasets to accompany J. Fox and S. Weisberg, An R
+Companion to Applied Regression, Third Edition, Sage.")
+    (license license:gpl2+)))
+
 (define-public r-car
   (package
     (name "r-car")