WP 34S xhat bug Message #1 Posted by Nigel J Dowrick on 26 Feb 2012, 6:03 a.m.
I'm running build 2562.
I enter a set of (x,y) points satisfying y = 2x + 1 (for example).
I then enter 7, execute yhat (yellowshift 6) and obtain 15 (correct).
If I then enter 15, execute yhat (from the STAT menu) I obtain 0.142857... i.e., the reciprocal of the correct answer.
This problem seems to occur with any set of data, not just the set above. I have not checked any regression other than linear.
I am astonished at the sheer volume of work that you guys have been putting into this project, especially recently. Thank you all  and take care of yourselves!
Nigel (UK)
