Manual: Pitfalls
Pitfalls
This page lists issues which may arise while using statsmodels. These can be the result of data-related or statistical problems, software design, “non-standard” use of models, or edge cases.
statsmodels provides several warnings and helper functions for diagnostic checking (see this blog article for an example of misspecification checks in linear regression). The coverage is of course not comprehensive, but more warnings and diagnostic functions will be added over time.
While the underlying statistical problems are the same for all statistical packages, software implementations differ in the way extreme or corner cases are handled. Please report corner cases for which the models might not work, so we can treat them appropriately.