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Plot any two testers across entries

Under the main menu of Accessories, select Data Plotting, and select Two Testers. A Tester Selection Pane, containing two drop-down text boxes, will appear on the top of the biplot. Select two testers, say, Tester5 and Tester7, and click the button of Plot 2 Testers. The biplot will be changed to a mono-plot containing only entries:

This plot indicates the following:

• Testers 5 and 7 are highly correlated, with r = 0.912;
• As a result, most entries are around the equality line. 
• Entry4 is better for tester5, while entry3 is better for tester7.