Logarithmic Regression: Different correlation from 3 different calculators
06-10-2015, 12:12 AM
Post: #11
 Dave Britten Senior Member Posts: 2,074 Joined: Dec 2013
RE: Logarithmic Regression: Different correlation from 3 different calculators
(06-09-2015 10:38 PM)Paul Dale Wrote:
(06-09-2015 10:00 PM)Dave Britten Wrote:  that log regression isn't appropriate for this data

Huh? r of 0.968 means r2 of about 0.93 which is very high. What level of correlation is appropriate ????? This is about as good as most data analysts wish for.

- Pauli

Oh, I was mostly referring to the fact that you get a TINY bit higher correlation with plain linear regression. This is actually some data from our ERP system showing growth of one of the larger tables in rows by year.

(06-09-2015 11:26 PM)CR Haeger Wrote:  r and r^2 may not be valid for nonlinear models per Minitab

Interesting, I'll read that over. Maybe coefficient of determination would be a better choice.
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 Messages In This Thread Logarithmic Regression: Different correlation from 3 different calculators - Dave Britten - 06-09-2015, 03:09 PM RE: Logarithmic Regression: Different correlation from 3 different calculators - CR Haeger - 06-09-2015, 07:36 PM RE: Logarithmic Regression: Different correlation from 3 different calculators - Dave Britten - 06-09-2015, 07:45 PM RE: Logarithmic Regression: Different correlation from 3 different calculators - CR Haeger - 06-09-2015, 08:51 PM RE: Logarithmic Regression: Different correlation from 3 different calculators - groundbeef - 06-09-2015, 09:37 PM RE: Logarithmic Regression: Different correlation from 3 different calculators - Dave Britten - 06-09-2015, 10:00 PM RE: Logarithmic Regression: Different correlation from 3 different calculators - Paul Dale - 06-09-2015, 10:38 PM RE: Logarithmic Regression: Different correlation from 3 different calculators - groundbeef - 06-09-2015, 10:53 PM RE: Logarithmic Regression: Different correlation from 3 different calculators - groundbeef - 06-09-2015, 11:16 PM RE: Logarithmic Regression: Different correlation from 3 different calculators - CR Haeger - 06-09-2015, 11:26 PM RE: Logarithmic Regression: Different correlation from 3 different calculators - Dave Britten - 06-10-2015 12:12 AM RE: Logarithmic Regression: Different correlation from 3 different calculators - CR Haeger - 06-10-2015, 03:28 PM

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