HP 48G Linear Regression Best Fit Line

[Rodger Rosenbaum]

(12-22-2021 09:16 PM)MNH Wrote:  

(12-21-2021 12:59 AM)Rodger Rosenbaum Wrote:  But it's easy to adjust the offsets to be orthogonal offsets with a few additions to OFIT. Here's the new OFIT:

<< X ORTH DUP 1. GET UNROT * Y - SWAP ATAN COS * 5. RND >>

(1) UNROT is not an HP 48G series command
(2) The subtraction function generates a - Error: Bad Argument Type

Instead of unrot, use ROT ROT.