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Chapter 11 Tutorial III Figure 11-8: Q-Q plot of principal component #1. Next, we use the data file (containg all three species of iris) FULLIRIS.DAT (go to "File", select "Read ASCII File", select FULLIRIS.DAT, and press <ENTER>). Return to "Robust Method", select "Robust Analysis, and change "Numbering..." from "Observations" to Populations" using the <ENTER> key. Next move to "Generate Graph With Current Options", press <ENTER> and the three different species of iris should be distinguished on the garph as three different sets of numbers, as shown in Figure 11-9. This figure immediately suggests that there is more than one population. It is remarkable to see how the observations from the three populations are grouped togeher on this graph. Scout Toturial 11-8
