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Loga
Loga
Level I

ANOM for Variances : What is this RMSE refering to ?

Created: Feb 4, 2021 12:05 AM  |  Last Modified: Jun 8, 2023 5:28 PM (2792 views)

RMSE is refering ??
How exactly RMSE is being calculated ?

 

RMSE = Sqrt [ Sum of Square (Predicted - Actual ) / N ]

 

If above formula , then what is predicted &  square?
==> predicted is variance of each group ?
==> actual overall variance ?

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2 REPLIES 2
Mark_Bailey
Staff Mark_Bailey
Staff

Re: ANOM for Variances : What is this RMSE refering to ?

Feb 4, 2021 12:44 PM (2732 views)  |  Posted in reply to message from Loga 02-04-2021

The RMSE is available from the Summary of Fit table after using ANOVA command.

 

RMSE.JPG

 

It is a pooled estimate of the within group variance, not the overall standard deviation. The latter estimate would include between group variation, too.

Loga
Loga
Level I

Re: ANOM for Variances : What is this RMSE refering to ?

Feb 8, 2021 08:21 AM (2649 views)  |  Posted in reply to message from Mark_Bailey 02-04-2021

Thank you for the explanation .

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