# Curve Fitting using Unconstrained and Constrained Linear Least Squares Methods

This online calculator build regression model to fit a curve using linear least squares method. If additional constraints on the approximating function are entered, calculator uses Lagrange multipliers to find the solutions.

This content is licensed under Creative Commons Attribution/Share-Alike License 3.0 (Unported). That means you may freely redistribute or modify this content under the same license conditions and must attribute the original author by placing a hyperlink from your site to this work https://planetcalc.com/8731/. Also, please do not modify any references to the original work (if any) contained in this content.

### Articles that describe this calculator

#### Function must pass through particular points

arrow_upwardarrow_downward | arrow_upwardarrow_downward | ||
---|---|---|---|

Digits after the decimal point: 4

Quadratic regression

Correlation coefficient

Coefficient of determination

Average relative error, %

Cubic regression

Correlation coefficient

Coefficient of determination

Average relative error, %

4th order polynomial regression

Correlation coefficient

Coefficient of determination

Average relative error, %

5th order polynomial regression

Correlation coefficient

Coefficient of determination

Average relative error, %

Linear regression

Linear correlation coefficient

Coefficient of determination

Average relative error, %

Logarithmic regression

Correlation coefficient

Coefficient of determination

Average relative error, %

Hyperbolic regression

Correlation coefficient

Coefficient of determination

Average relative error, %

6th order polynomial regression

Correlation coefficient

Coefficient of determination

Average relative error, %

7th order polynomial regression

Correlation coefficient

Coefficient of determination

Average relative error, %

8th order polynomial regression

Correlation coefficient

Coefficient of determination

Average relative error, %

Results

The file is very large. Browser slowdown may occur during loading and creation.

### Calculators that use this calculator

### Calculators used by this calculator

- Curve Fitting using Unconstrained and Constrained Linear Least Squares Methods
- Random matrix generator

URL copied to clipboard

## Comments