Sorry to drag up an old thread but is there a way to create a condition that would show zero slope or a straight horizantal linear regression line give or take a few % points?  i thought maybe a % up less than one and % down greater than zero but that didn't do it.  Thanks.

I have an Imac and previously my "scroll wheel" function on the mouse would expand and contract the chart but it no longer works.  The scroll function works everywhere else on the computer in other docs but just not in TC2000.  This started happening recently.  Has anyone else had this sort of issue before? I checked my mouse settings on the computer and everything checks out.  Just curious.