#
*Java Number Cruncher*

Program 10-2

## Polynomial Regression

This applet 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:

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

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