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Chapter 10
Tutorial II
"Compute Statistics Using..." to Classical, "Initial Estimate..." to Classical, and setting the "Right Cutoff Tail" ( ")
to any number between 0.001 and 0.8.
The "Select Variables" heading is a common option for three of the level 1 menu headings
(Classical Method, Robust Method, and PCA). In each instance, the "Select variables" option
functions in the same way: through the use of plus (+) and minus (-) signs, users can indicate
which variables they want included in, and which variables left out of, the analysis. In the above
example we didn't use "Select Variables", with this particular file, by default, all variables except
Count are selected (resulting in the "4 out of 5 variables used..." statement in Figure 10-2).
The headings for Generalized Distance and Multivariate Kurtosis both lead to the same
menu of three choices: cutoff values for " of 0.10, 0.05, or 0.01. Once an """ is selected, the
data are analyzed, and the results posted to the screen.
10.2
Determining Causal Variables, and Removing Flags
Working immediately after Multivariate Kurtosis has detected the outlier, select the
"Causal Variable" choice to determine the variable(s) that caused the outlier. A variable is
identified as a cause if, when removed from the analyses, the observations are no longer outliers.
Scout Tutorial
10-2