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.

Contributor
Posts: 62

Re: Sign of Predictors in Regression Model

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.
SAS 9.4 (TS1M0) X64_7PRO WIN 6.1.7601 Service Pack 1 Workstation

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Re: Sign of Predictors in Regression Model

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