Important Request

[Tim Wessman]

(04-03-2017 11:30 PM)math7 Wrote:  I think it should not be so difficult if you already did it for a Model as the complete program would be for the 13 models, a little more code, and the calculator would choose the one that has a better fit to the data, it is simply something like that, if the HP 50g exists I do not see why not in the Prime.

Please re-read carefully my post. I explained in detail several times and reasons why this request is neither simple, nor mathematically possible to the best of my knowledge. There is no such thing as "correlation" for ANYTHING except a linear model. Other methods of measuring error are not compatible.

Also, please note that you are talking to the person that wrote 95+% of the statistics code in Prime. I did spend probably at least a month of time over the course of the 39gII/Prime researching and investigating if this would be possible. I'd love it if I were corrected here, but so far I've not seen anything that would be possible to implement.

I do agree with Joe that a "Best fit" opens up some interesting learning options and investigation paths, but as I've shown a simple app function gives that option. I'm not sure how to build it in, nor the appropriateness of doing so. A lot of statistics educators actually were vehemently against having such an option built in.