What are 'R2' and MSe parameters for and how can I show them ?

Hello I'd like to know what they are (what for do we use them or want to see their values) and how can I see their values.

Thanks in anticipation

Answer 1

[Amith Kamath]

If you do have Curve Fitting Toolbox, http://www.mathworks.com/help/curvefit/evaluating-goodness-of-fit.html should help explain what these terms are. One of the outputs of the FIT function is 'gof' which is elaborated in http://www.mathworks.com/help/curvefit/fit.html#outputarg_fitobject. This provides all the measures you're interested in.

Answer 2

[Shashank Prasanna]

Scroll down and take a look at the 'Definitions' and properties section:

http://www.mathworks.com/help/stats/linearmodelclass.html

More information about the concept itself:

http://en.wikipedia.org/wiki/Coefficient_of_determination

Its a way to understand how good your fit is

Answer 3

[dpb]

See

http://en.wikipedia.org/wiki/Coefficient_of_determination

for a basic definition for R2. In short, R2=1-SSE/SST is the amount of the total variance "explained" by the regression.

It's one measure of how well a model represents the data.

Displaying same in Matlab depends on what toolset you used to get the estimation.