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Covariate as a designing factors
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Re: Covariate as a designing factors
Hi @Sherif_96,
Yes, you can create a datatable with your covariates and list all their possible values.
Then, you can use the platform Custom design, and in the "Covariate / Candidate Runs" panel, click on "Select Covariate Factors" to select the covariate factors from your table :
Hope this answer will help you,
"It is not unusual for a well-designed experiment to analyze itself" (Box, Hunter and Hunter)
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Re: Covariate as a designing factors
Perhaps you are using another definition for a covariate, but covariates are meant to be measurable, uncontrollable factors in an experiment. Using covariates in an experiment is a way to handle noise that is measurable in the experiment. The covariate is a random variable in an otherwise fixed effects model (hence mixed model). Analysis of the covariate modifies the data to account for the covariate effect before analysis of the fixed effects model is done. Depending on the size of the experiment, there is a limit to the number of covariates you can account for.
Now you can certainly do regression using random variables all you want.