Programming with R Mar 17, 2013 http://wiki.stdout.org/rcookbook/ http://research.stowers-institute.org/efg/R/Color/Chart/ http://stats.stackexchange.com/questions/3136/how-to-perform-a-test-using-r-to-see-if-data-follows-normal-distribution http://rtutorialseries.blogspot.com/2010/03/r-tutorial-series-r-beginners-guide-and.html http://www.i-programmer.info/programming/other-languages/1706-a-programmers-guide-to-r.html http://cran.r-project.org/doc/contrib/Short-refcard.pdf http://www.cookbook-r.com/Graphs/ http://www.stat.columbia.edu/~tzheng/files/Rcolor.pdf