I need to draw a line of best fit in AutoCAD 2013 to check alignment of a number of measured points along a track.I am aware you can do this in Civil 3D but that is unavailable to be. Ive also worked out coordinates for a line of best fit using least quares in excel but the slope angle isnt right, it seems to go off at an angle that moves away from my points from one end to the other.I would like to produce the line in AutoCAD and see how it comes out, is there an add on to do this?