Answer:He is overgeneralizing which means he is committing an error of overgeneralization .
Explanation:This is a common error in our thinking or reasoning .
We can see some results of something and then make a broader conclusion that what we see represent what is in a broader sense even though we may not have enough data to make such conclusion.
For example we can use our experience with fewer individual of a particular race to overgeneralize that if that has been our experience with just fewer people of that race then the experience will be the same with everyone from that race .
Overgeneralization can occur as we write arguments , in our thoughts and in political debates and it can even happen in our research work or in mathematical reasoning, or the reasoning in scientific or other academic research.
