Hi,
I've built a linear model using multiple linear regression which leads me a
R-squared value of 73.58%.
After that, I used this model to predicted some values based on the test
data.
Now I'm wondering how:
1. can I measure de R-squared value between the predicted(by the model) and
real (observed) values.?
2. Measure the RMSE error .
Example: suppose my data its below:
REAL Predicted
8.22 9.016811
28.24 9.016811
29.69 26.491108
78.02 59.234736
51.29 67.823793
37.55 18.033622
10.82 29.683154
--
Thanks in advance,
Giovane
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