I have tried to fit a glm to some weather data and I got this weird qq-plot. What could this possibly mean? I am aware of how various skewed error distribution qq-plots should look like, but what I have here seems more bizarre.
Cross Validated is a question and answer site for people interested in statistics, machine learning, data analysis, data mining, and data visualization. It only takes a minute to sign up.Sign up to join this community
You've got some non-normal residual tails over there, especially a very heavy right one. Might want to consider taking a transform of your dependent variable. A log transform might help quite a bit, but no way to tell for sure without seeing the actual variable distribution, along with the rest of the residual plots (for both dependent and independent variables).
Some resources that might help you: