Displaying 2 results from an estimated 2 matches for "reservesub".
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2011 Feb 10
1
Newb Prediction Question using stepAIC and predict(), is R wrong?
...variables are labeled as their column. (Is this a problem?)
The dataframe that I use to build the model is the same as the data I'm
using to predict with.
Here is a portion of what is happening..
This is the value it is predicting = > [1] 9.482975
Summary of the model
Call:
lm(formula = reservesub$paid ~ reservesub[, 3 + i] + reservesub$grads[,
i] + reservesub$Sun + reservesub$Fri + reservesub$Sat)
Residuals:
Min 1Q Median 3Q Max
-15.447 -4.993 -1.090 3.910 27.454
Coefficients:
Estimate Std. Error t value Pr(>|t|)
(Intercept)...
2011 Feb 01
1
How can I index multiple linear models? (Without getting a warning.)
My code looks like this:
lin = NA
for(i in 1:15){
lin[i] = lm(reservesub[,3]~ reservesub[,i+3])
}
For which I'm given 15 warning messages which say :
"1: In lin[i] = lm(reservesub[, 3] ~ reservesub[, i + 3]) :
number of items to replace is not a multiple of replacement length"
I'm am able to generate the 15 different models and get the coefficien...