Interactive tool for fitting a straight line or other curves to data points. Great supplement to any **science lab course**. Let’s you see how data and mathematical models relate to each other.

With your mouse, drag data points and their error bars, and watch the best-fit polynomial curve update instantly. You choose the type of fit: linear, quadratic, cubic, or quartic. The reduced chi-square statistic shows you when the fit is good. Or you can try to find the best fit by manually adjusting fit parameters.

URL — http://phet.colorado.edu/en/simulation/curve-fitting

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PhET is a collection of online science and math simulations sponsored by the University of Colorado, Boulder. They can be run from any web browser provided Java/and or Flash are installed on your local computer.

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Posted on August 26, 2010byMichael Garrett0