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Regression with qualitative/categorical explanatory variables

By Jon | Mar 04, 2018 08:01PM CET

I have an analysis with 3 Categorical/qualitative explanatory variables (with maximum 20 categories and a numerical dependent variable. Do i need to create dummy variables before I run the linear regression in XLSTAT? Does it do this for me as part of the programme?

Thanks

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By Efthalia | Mar 05, 2018 11:51AM CET | XLSTAT Agent

Hello Jon,

You can run an ANCOVA analysis in this case. No need to transform your variables. Here is an example:
https://help.xlstat.com/customer/en/portal/articles/2062234-ancova-analysis-in-excel-tutorial?b_id=9283

Regards,

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