Thanks for the prompt responses. What a great list! I am going with Ista’s solution. I appreciate the R way, but the whole point of this script is to shield students from having to know R as much as possible. I don’t want to give them any choices. In fact, last year I had them use Deducer thinking that point and click would be easy and they could experiment to their hearts content, but that was a complete disaster. This year using these pre-written scripts with RStudio was much better. Even I have only learned enough R to show students how to do a curve fit. I am a complete novice.
Dennis questioned the model. Q: Do you want x:log(x) or x * log(x) in the second geom_smooth() formula? I hope I am doing this correctly. Computer science theory predicts n lg n behavior for some data sets and quadratic for others. I hope I am fitting to A * n * log(n) + B * n + C where * in the above expression represents multiplication. I was under the impression that : in the model formula was multiplication. Can someone verify that. Thanks, Stan J. Stanley Warford Professor of Computer Science Pepperdine University Malibu, CA 90263 [email protected] 310-506-4332 _______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-sig-teaching
