apR2p
This m-file computes an approximate determination coefficient (R2) for prediction, say
R2pred = 1 - (PRESS/SST)
where PRESS = prediction error sum of squares, SST = total sum of squares.
This statistic gives some indication of the predictive capability of the regression model. So, we could expect the model 'explain' about a percentage of the variability in predicting new observations, as compared to the approximately percentage of the variability in the original data explained by the least squares fit.
Syntax: function x = apR2p(D)
Inputs:
D - matrix data (=[X Y]) (last column must be the Y-dependent variable; X-independent variables).
Output:
x - approximate determination coefficient (R2) for prediction.
Cite As
Antonio Trujillo-Ortiz (2024). apR2p (https://www.mathworks.com/matlabcentral/fileexchange/14619-apr2p), MATLAB Central File Exchange. Retrieved .
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apR2p/
Version | Published | Release Notes | |
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1.0.0.0 | It was added an appropriate format to cite this file. |