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Practical Predictive Analytics
book

Practical Predictive Analytics

by Ralph Winters
June 2017
Beginner to intermediate content levelBeginner to intermediate
576 pages
15h 22m
English
Packt Publishing
Content preview from Practical Predictive Analytics

Adjusted R-square plot

The adjusted R-square plot is also helpful in selecting a model. Each row of the following plot represents a separate model, with the intercept and all of the variables as columns. The plot function shows how adjusted R-square (y-axis) changes for each of the variables in the model:

plot(out, scale = "adjr2")

To select an optimal model, look to the point at which variables have black boxes near the top of the y-axis range.

For our example, that would mean using the four-variable model Ozone, Month, Solar.R, and Day. However, as noted previously, the difference between the two and four variable model seems minimal. ...

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Publisher Resources

ISBN: 9781785886188Supplemental Content