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gchaudhary
gchaudhary
Level I

Fit model with categorical variables (two of them 3 level and one 2 level)

Created: Apr 22, 2021 09:18 PM  |  Last Modified: Jun 8, 2023 5:32 PM (1003 views)

When I generate fit model with 3 categorical variables (two of them 3 level and one 2 level), it does not generate std error, t ratio and p values, can you please help why is it?

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Thierry_S
Super User Thierry_S
Super User

Re: Fit model with categorical variables (two of them 3 level and one 2 level)

Apr 23, 2021 12:47 AM (991 views)  |  Posted in reply to message from gchaudhary 04-22-2021
Hi,
Without seeing an example of your data, it is difficult to provide an answer but, often, the problem is related to the lack of observation / data across the entire spectrum of the variables in your model. I would recommend to explore your data in Graph Builder to visually assess the data coverage across conditions before going through the development of a model.
Best,
TS
Thierry R. Sornasse
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