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T O P I C    R E V I E W
dominik.mierzwa Posted - 01/03/2023 : 1:18:49 PM
Origin Ver. and Service Release (Select Help-->About Origin): 2022
Operating System: Windows 10

Hi,

Happy New Year!

Can you explain to me the meaning of the N and K in AIC formula. K is the number of the model parameters, and N is the number of datapoints? Am I right?


Kind regards,
Dominik
5   L A T E S T    R E P L I E S    (Newest First)
YimingChen Posted - 01/04/2023 : 4:57:27 PM
In the Statistics on Columns tool dialog, under the Computation Control tab, you can set different Varaicne Disisor of Moment --- DF, N, WDF, WS, WVR. The capital N in the page means using sample size n as the divisor to calculate the moment.



dominik.mierzwa Posted - 01/04/2023 : 09:33:55 AM
Please look at this
https://www.originlab.com/doc/Origin-Help/DescStats-Dialog

There are N and n and for skewness both are used in the same formula (gamma 1).

Kind regards,
Dominik
YimingChen Posted - 01/04/2023 : 09:18:43 AM
If you are talking about this page, then I think N and n are the same.
https://www.originlab.com/doc/Origin-Help/PostFit-CompareFitFunc#Bayesian_Information_Criterion_.28BIC.29

James
dominik.mierzwa Posted - 01/04/2023 : 03:00:52 AM
quote:
Originally posted by YimingChen

That is correct.



Thank you. In formulas, n occurs in both cases (n and N). I am not pretty sure why. Is N used for normally distributed data?

Kind regards,
Dominik
YimingChen Posted - 01/03/2023 : 4:23:18 PM
That is correct.

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