What is the difference between a uniform and non-uniform probability model? In a uniform probability model, the trials all result in the same outcome. Whereas, in a non-uniform probability model, the trials result in inconsistent outcomes. In a uniform probability model, the sample space consist of outcomes that are not all equally likely to occur. Whereas, in a non-uniform probability model, the outcomes in the sample space are all equally likely to occur. In a uniform probability model, the trials result in inconsistent outcomes. Whereas, in a non-uniform probability model, the trials all result in the same outcomes. In a uniform probability model, the sample space consist of outcomes that are all equally likely to occur. Whereas, in a non-uniform probability model, the outcomes in the sample space are not all equally likely to occur.