Displaying 2 results from an estimated 2 matches for "gufrgs".
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2007 Dec 11
1
postResample R² and lm() R²
Hello,
I'm with a conceptual doubt regarding Rsquared of both lm() and
postResample(library caret).
I've got a multiple regression linear model (lets say mlr) with anR² value
of 67.52%.
Then I use this model pro make predictions with predict() function using the
same data as input , that is, use the generated model to predict the value
associated with data that I used as input.
Next, if
2007 Dec 08
1
lm: how to calculate rsquared of the predicted values?
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