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Chapter 5: Bivariate Data
Figure 5-25:
Non-linear residual plot
A curve pattern in the residuals will suggest that a non-linear model is more
appropriate for the original data.
Illustration 3:
Figure 5-26
shows the least squares regression line and the
R
-squared value for the independent variable of the first 200 natural numbers
(examples: 1, 2, 3, 4, …) and the dependent variable of the first 200 prime
numbers (examples: 2, 3, 5, 7, 11, 13, 17, 19, …). One should feel fairly
confident in the stated model since the
-squared is fairly large, and the fit
appears so snug.