This program demonstrates polynomial regression. It uses the least squares algorithm to plot a regression polynomial of degree 1 through 9 among n data points, where n is at least one more than the degree.

To run the demo:

1. Choose a degree for the regression polynomial.
2. Click the mouse in the graph panel to set up to 100 data points, but at least one more than the degree.
3. Click the Regression poly button to plot the regression polynomial.
4. You can add more data points and click the Regression poly button again.
5. You can choose a different polynomial order and then click the Regression poly button to plot a new regression polynomial among the same points.
6. Click the Reset button to start over.

If the program fails to create a regression function, try adding more points and press the Regression poly button again.

The original Java Applets do not run in modern browsers, but you can download the Java code and run it locally on your desktop. Check back for JavaScript and Python versions - coming soon!

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