[list=1][br][*]Enter the number of points to be plotted.[br][*]Enter the points in the inputbox. The graph will update as the points are entered.[br][*]Click the Show Line box to show a line. Fit the line to the data by moving the points. Points can be moved in small increments by selecting the point with the cursor and using the arrow keys on a keyboard.[br][*]Click the Show Line of Best Fit button to view the line of best fit, sum of the squares for the line of best fit and the correlation coefficient (r). [br][*]The graph of the residuals is shown in the lower grid.[br][/list]

NCTM Classroom Resouces Committee[br]Jerel L. Welker[br]Lincoln Public Schools[br]Lincoln, NE[br]jwelker@lps.org