dummy variable noun a variable appearing in a mathematical expression that can be replaced by any arbitrary variable, not occurring in the expression, without affecting the value of the whole Liberaldictionary.com
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Figure 3 : Graph showing the regression results of the ANCOVA model example: Public school teacher’s salary (Y) in relation to State expenditure per pupil
Now, we’re ready to move on to the second step computing the difference between the groups. How do we determine that? Well, the difference must be the
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