A 1982 HP 12c and it's story

[bshoring]

Zac, thanks for telling us the story. We all feel a certain attachment to our HP calculators, and can all identify with the excitement you are feeling.

I don't know if you have explored the Statistical functions of the 12C and linear estimate, but a while back there was a thread on this forum on the subject that just blew my mind.

Starting around post 17 on:
http://www.hpmuseum.org/forum/thread-618...ght=HP-12C

there are some alternate ways of calculating Linear Regression that are most interesting. I never knew you could use the correlation coefficient and standard deviation to calculate the angular coefficient.

Might be of interest to you.