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Small Solver Program
02-19-2019, 01:10 AM (This post was last modified: 02-19-2019 01:22 AM by Albert Chan.)
Post: #19
RE: Small Solver Program
Quadratic fit without linear algebra (32SII) - NOT only for statistics lovers - LONG

Linear regression on slope had another benefit, which my Casio cannot do.
Doing Quadratic Regression on Casio, you don't really know if it is any good.
There is no "correlation coefficient" to lookup. (Why?)

Linear regression on slope can show whether a Quadratic curve is warranted.

I think the code add slope data, like this:

Data points (0,90) and (30, 90.2), add to linear regression: (30+0)/2, (90.2-90)/(30-0)
Next point (60, 86.4), add to linear regression: (60+30)/2, (86.4-90.2)/(60-30)
...
N points (sorted) thus generate N-1 slopes to regress.
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Messages In This Thread
Small Solver Program - Gamo - 02-14-2019, 05:25 AM
RE: Small Solver Program - Thomas Klemm - 02-14-2019, 07:06 AM
RE: Small Solver Program - Albert Chan - 02-15-2019, 12:07 AM
RE: Small Solver Program - Thomas Klemm - 02-15-2019, 06:26 PM
RE: Small Solver Program - Albert Chan - 02-15-2019, 09:16 PM
RE: Small Solver Program - Thomas Klemm - 02-16-2019, 03:58 AM
RE: Small Solver Program - Albert Chan - 11-03-2019, 03:14 PM
RE: Small Solver Program - Albert Chan - 11-10-2019, 07:02 PM
RE: Small Solver Program - Albert Chan - 12-01-2019, 12:13 AM
RE: Small Solver Program - Csaba Tizedes - 02-16-2019, 12:24 PM
RE: Small Solver Program - Thomas Klemm - 02-16-2019, 01:42 PM
RE: Small Solver Program - Csaba Tizedes - 02-16-2019, 03:24 PM
RE: Small Solver Program - Gamo - 02-17-2019, 02:57 AM
RE: Small Solver Program - Thomas Klemm - 02-17-2019, 09:06 AM
RE: Small Solver Program - Gamo - 02-17-2019, 02:33 PM
RE: Small Solver Program - Thomas Klemm - 02-17-2019, 04:57 PM
RE: Small Solver Program - Gamo - 02-18-2019, 03:49 AM
RE: Small Solver Program - Thomas Klemm - 02-18-2019, 05:20 AM
RE: Small Solver Program - Dieter - 02-18-2019, 07:46 PM
RE: Small Solver Program - Thomas Klemm - 02-18-2019, 10:22 PM
RE: Small Solver Program - Albert Chan - 02-19-2019 01:10 AM
RE: Small Solver Program - Csaba Tizedes - 02-19-2019, 08:39 AM
RE: Small Solver Program - Thomas Klemm - 02-20-2019, 05:31 AM
RE: Small Solver Program - Csaba Tizedes - 02-25-2019, 08:39 PM
RE: Small Solver Program - Thomas Klemm - 02-20-2019, 07:22 AM
RE: Small Solver Program - Thomas Klemm - 02-24-2019, 09:21 AM
RE: Small Solver Program - Thomas Klemm - 02-25-2019, 11:00 PM
RE: Small Solver Program - Albert Chan - 01-04-2020, 07:49 PM



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