Business Statistics Made Easy in SAS

End Notes

1: What about the omitted Satisfaction trust item? Having left it out of the aggregated Satisfaction scale, we may leave it out permanently. However, if it reflects something uniquely important, the mere fact it does not want to “play with” other items (in the sense that they do not want to group together) does not necessarily mean it should be left out of further analysis. You might include such “lone rider” items as sole variables that - by virtue of their lack of ”willingness” to group with other variables - are unique. [return]

2:Having said this, the use of this technique for ordinal variables is debated. Some people prefer keeping ordinal variables as numerical data, although it is more common to use the dummy variable technique. ...