fitting

In a [previous post](/dotphysics/2008/09/basics-making-graphs-with-kinematics-stuff-part-ii/), I talked about how to plot kinematics data with a spread sheet and how to fit a quadratic function to the data. In the back of my head I remember "Don't trust Excel". I seem to recall someone claiming that Excel did not do a proper fit. To test this, I collected some data and used several methods to fit the data: MS Excel's built in function fitting Using the spread sheet (Excel) to manually calculate the best fit parameters Vernier's Logger Pro (version 3.6.1) Plot 0.997 - http://plot.micw.eu…