Bioequivalence and Bioavailability Forum

Main page Policy/Terms of Use Abbreviations Latest Posts

 Log-in |  Register |  Search

Back to the forum  Query: 2017-10-18 09:33 CEST (UTC+2h)
 

Goodness of fits: one model, different datasets [General Sta­tis­tics]

posted by ElMaestro - Denmark, 2017-10-06 23:01  - Posting: # 17871
Views: 620

Hi all,

I have some different datasets that are not large at all, and I am doing some model fits on them and from that I am extracting a correlation measure like r squared etc. For the sake of simplicity let us just assume there in a single model like a linear regression without weights.

I would like to compare apples and pears, or at least the fits of three different datasets A, B and C. These datasets do not have the same number of data points, so I cannot fairly compare e.g. r squared of A vs B vs C directly.

Akaike and Schwarz are presumably not the way to go, I think, as I am not varying the model but the dataset, so to say. Kolmogorov-Smirnoff would potentially be useful if I had a boatload of points, which I don't anyway. I am very poor at explaining what I think I am looking for :crying: but I would call it a "fit likelihood" or "correlation statistic that is sample size corrected" :lookaround:. Google and Wikipedia aren't my friends in this regard (although on all other matters, including politics, religion, science and baking recipes G. and W. are always providing the right answers).

Does anyone here know of a handy statistic that allows a fair comparison of goodness of fits across datasets with unequal sizes, given a single model??

Muchas gracias.

I could be wrong, but…


Best regards,
ElMaestro

- since June 2017 having an affair with the bootstrap.

Complete thread:

Back to the forum Activity
 Mix view
Bioequivalence and Bioavailability Forum | Admin contact
17,394 Posts in 3,725 Threads, 1,071 registered users;
37 users online (0 registered, 37 guests).

Some scientists claim that hydrogen, because it is so plentiful,
is the basic building block of the universe.
I dispute that. I say there is more stupidity than hydrogen,
and that is the basic building block of the universe.    Frank Zappa

The BIOEQUIVALENCE / BIOAVAILABILITY FORUM is hosted by
BEBAC Ing. Helmut Schütz
XHTML/CSS RSS Feed