Q. How Do I do Fit 2?

A. You need to create it yourself. Clicking on your chart to activate it, go to:

Curve Fit -> General -> Edit General -> Add
This will create a new fit called "New Fit". Rename it by clicking the Text field in the lower left hand corner. Then you may edit your new curve fit by clicking "Edit". There you may enter in your equation for "Fit 2"

Q. When I create a scatter plot, I get this error:

"Text Data columns can only be used as the independent plot variable"

A. This is because the columns is set to TEXT, and not FLOAT. This usually happens when pasting data in from Excel. You can fix this by Right Clicking on the column in your data window, selecting "Column Format" and then changing your column to the desired numerical type in the upper right hand corner of the new window that appears.

Q. When I enter in a fit equation for Fit 2, I get a syntax error

A. When entering in the equation, you do not need to put Y = equation.
just put in the equation in straight, such as "m1 + m2 * m0; m1 = 1; m2 = 2"
so DO NOT PUT "y = m1 + m2 * m0; m1 = 1; m2 = 2"

Please send questions or comments to pmcl@physics.utexas.edu