Nonlinear Fitting Lecture

7
The importance of using the nonlinear equation rather than the linearly transformed equation.

Transcript of Nonlinear Fitting Lecture

Page 1: Nonlinear Fitting Lecture

The importance of using the nonlinear equation rather than the linearly transformed equation.

Page 2: Nonlinear Fitting Lecture

Visualizing how the algorithm arrives at the minimizedsum of squared error terms by trying different combinationsof the parameters (A and B in this case)

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How should the data in a “residuals” plot appear?

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The importance of providing reasonable initial “guesses”of the parameters of interest

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The error estimates of the parameters are helpful, but theyshould be regarded as underestimates of the true error. TheSolver algorithm in Excel does not provide error estimates

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An “outlier” has more influence in determining the best-fit line when there are relatively fewer data points

Page 7: Nonlinear Fitting Lecture

An “outlier” has more influence in determining the best-fit line when there are relatively fewer data points