faulty generalization
process of reaching a conclusion about all or many instances of a phenomenon, on the basis of one or a few instances of that phenomenon
sampling bias
bias in which a sample is collected in such a way that some members of the intended population are less likely to be included than others
false analogy
faulty instance of the argument from analogy
hasty generalization
informal fallacy of faulty generalization by reaching an inductive generalization based on insufficient evidence—essentially making a rushed conclusion without considering all of the variables
anecdotal evidence
evidence collected in a casual or informal manner and relying heavily or entirely on personal testimony