Programming the statistical procedures from SAS

Sign of Predictors in Regression Model

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Contributor
Posts: 33

Sign of Predictors in Regression Model

Hi,

In Regression Model , it is possible that a predictor may have positive relation with dependent variable in Bi-variate analysis , however in Model Equation  the predictor may have a negative sign. Why this happens and how is this resolved.

 

This can happen in Trainin & Validation data as well. That is a predictor may have a Positive sign in the Model equation in Training data set and negative sign in Validation Data-set.

Frequent Contributor
Posts: 95

Re: Sign of Predictors in Regression Model

Posted in reply to vishal_prof_gmail_com

To me, this indicates a problem somewhere, either in selection of the model, or partitioning of the data into training and validation sets.

 

Do you have an example that you can post?

Norman.
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Re: Sign of Predictors in Regression Model

Posted in reply to vishal_prof_gmail_com
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