HP 48G Linear Regression Best Fit Line

[MNH]

(12-22-2021 10:08 PM)Rodger Rosenbaum Wrote:  I'm eagerly awaiting your report that it's all working as it should!

OFIT

<< X ORTH DUP 1 GET ROT ROT * Y - SWAP ATAN COS * 5 RND NEG >>

ORTH

<< LR SWAP DROP DUP CORR DUP SIGN 4 ROLLD SQ / SWAP INV -
2 / DUP SQ 1 + √ ROT * + DUP ΣX * NEG ΣY + NΣ / { 2 1 } →ARRY >>

All working as it should! Thank you, Rodger!