Typical Uses and Applications
- Polynomial fitting: models are polynomials in an independent variable, x:
- Straight line: .
- Quadratic: .
- Cubic, quartic and higher polynomials. For regression with high-order polynomials, the use of orthogonal polynomials is recommended.
- Numerical smoothing and differentiation — this is an application of polynomial fitting.
- Multinomials in more than one independent variable, including surface fitting
- Curve fitting with B-splines
- Chemometrics, Calibration curve, Standard addition, Gran plot, analysis of mixtures
Read more about this topic: Linear Least Squares (mathematics)
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