https://community.jmp.com/t5/Discussions/Fit-model-with-categorical-variables-two-of-them-3-level-and-one/m-p/379181#M62913 Hi,<BR />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.<BR />Best,<BR />TS Fri, 23 Apr 2021 04:47:13 GMT Thierry_S 2021-04-23T04:47:13Z https://community.jmp.com/t5/Discussions/Fit-model-with-categorical-variables-two-of-them-3-level-and-one/m-p/379167#M62911 <P>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?</P> Fri, 09 Jun 2023 00:32:30 GMT https://community.jmp.com/t5/Discussions/Fit-model-with-categorical-variables-two-of-them-3-level-and-one/m-p/379167#M62911 gchaudhary 2023-06-09T00:32:30Z https://community.jmp.com/t5/Discussions/Fit-model-with-categorical-variables-two-of-them-3-level-and-one/m-p/379181#M62913 Hi,<BR />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.<BR />Best,<BR />TS Fri, 23 Apr 2021 04:47:13 GMT https://community.jmp.com/t5/Discussions/Fit-model-with-categorical-variables-two-of-them-3-level-and-one/m-p/379181#M62913 Thierry_S 2021-04-23T04:47:13Z