Non-Linear Regression

This example compares the results for a non-linear regression by using the Weibull++ Equation Fit Solver tool.

The data set is from Table 13.1 on page 515 in the book Applied Linear Statistical Models by Kutner, Nachtsheim, Neter, and Li, McGraw-Hill, 2005.

In the book, the exponential function $$y = a exp(-bx)\,\!$$ is used. The estimated model parameters and the variances are $$\hat{a}\,\!$$ = 58.6065, $$std_{\hat{a}}\,\!$$ = 1.472,  $$\hat{b}\,\!$$ = -0.03959,  $$std_{\hat{b}}\,\!$$ = 0.00171

The following picture shows the results in Weibull++: