The Museum of HP Calculators
HP Forum Archive 13
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|regression - logarithmic curve fit|
Message #1 Posted by pieropiero on 2 Oct 2003, 9:37 a.m.
From the HP-67 standard pack I have converted into qbasic language the linear, power, and exponention formulas as mentioned in pages 03-02 thru 03-04. They work alright but I am unable to make use of the logarithmic regression
curve fit. This will not give the correct results.
I do not need the qbasic program lines but I would like to
get the correct logarithmic regression formula. Any help
will be welcomed.
I have some spare HP items, such as HP-41 complete with card reader and printer. Anyone interested?
|Re: regression - logarithmic curve fit|
Message #2 Posted by Tizedes Csaba on 3 Oct 2003, 7:25 a.m.,
in response to message #1 by pieropiero
The form of the curve is:
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