In this recipe we will remove redundant variables by building a correlation matrix that identifies highly correlated variables.
This recipe uses the datafile,
nasadata.txt and the stream file,
You will need a copy of Microsoft Excel to visualize the correlation matrix.
To remove redundant variables using correlation matrices:
recipe_variableselection_correlations.strby navigating to File | Open Stream.
Correlation Types. Notice that there are several variables of type continuous whose direction values have been ...