Issues

Issues

• BUG: stats.powerdiscrepancy returns (nan, nan) for G-test (lambd=0) when observed counts contain zeros

  statsmodels/statsmodels#10703 · opened on Nov 9, 2026
  4

• BUG: HC2/HC3 standard errors are arbitrary (or inf) when an observation has leverage 1, e.g. a single-observation dummy

  statsmodels/statsmodels#10659 · opened on Oct 31, 2026
  3

• BUG: acf, acorr_ljungbox, kpss and OLS rsquared return confident results on a constant series when the mean is not exactly representable (adfuller already rejects constant input)

  statsmodels/statsmodels#10647 · opened on Oct 29, 2026
  2

• BUG: VAR.fit gives no warning for perfectly collinear series (OLS emits SingularMatrixWarning)

  statsmodels/statsmodels#10646 · opened on Oct 29, 2026
  3

• [Security] Automated static analysis findings for statsmodels/statsmodels (academic research)

  statsmodels/statsmodels#10527 · opened on Oct 22, 2026
  7

• PHReg: schoenfeld_residuals use Breslow means under ties="efron", and martingale_residuals omit each subject's own hazard jump

  statsmodels/statsmodels#10288 · opened on Sep 26, 2026
  3

• ENH: GLM outcome models in TreatmentEffect (part of #8987)

  statsmodels/statsmodels#10227 · opened on Sep 2, 2026
  1

• ENH: overlap diagnostics and explicit trimming for TreatmentEffect

  statsmodels/statsmodels#10224 · opened on Sep 1, 2026
  1

• MAINT: Remove hasattr/getattr anti-patterns by initializing attributes to None

  Task

  statsmodels/statsmodels#9880 · opened on Jul 1, 2026
  4

• Broken links on Examples wiki page

  statsmodels/statsmodels#9841 · opened on Jun 15, 2026
  3

• Feature proposal: Johansen cointegration test with Fourier-type smooth nonlinear trends (Kurita & Shintani, 2025)

  statsmodels/statsmodels#9806 · opened on May 23, 2026

• BUG/ENH (sandbox) OnewayLS pairwise comparison - effective degrees of freedom

  statsmodels/statsmodels#9777 · opened on Apr 1, 2026
  7

• MAINT: Improve codebase maintainability and fix Kalman filter corner case

  statsmodels/statsmodels#9740 · opened on Jan 13, 2026

• Feature Request: Fama-Macbeth for two-stage regression with HAC standard errors

  statsmodels/statsmodels#9723 · opened on Dec 26, 2025
  2

• Fast non-linear non-Gaussian State Space models estimation feature

  statsmodels/statsmodels#9706 · opened on Dec 9, 2025
  5

• ENH: models for heavy-tailed count distributions

  statsmodels/statsmodels#9697 · opened on Nov 21, 2025
  2

• ENH: prediction evaluation: point versus probability prediction, zeros in zero-inflated models

  statsmodels/statsmodels#9696 · opened on Nov 21, 2025
  1

• ENH: predicted probabilities and classification, with population prevalence

  statsmodels/statsmodels#9684 · opened on Nov 4, 2025

• FAQ/DOC Cohen's, Fleiss' kappa versus other agreement measures

  statsmodels/statsmodels#9680 · opened on Nov 1, 2025
  1

• ENH: random effect ordinal/ordered model and model based agreement measures

  statsmodels/statsmodels#9679 · opened on Oct 31, 2025

• DOC: NonlinearDeltaCov as public feature, docs?

  statsmodels/statsmodels#9674 · opened on Oct 20, 2025

• ENH: power for continuous equivalence tests z-tost and t-tost

  statsmodels/statsmodels#9667 · opened on Oct 10, 2025

• ENH: Intraclass correlation ICC based on oneway random effect

  statsmodels/statsmodels#9666 · opened on Oct 9, 2025

• ENH: variance component random effect estimation versus penalized

  statsmodels/statsmodels#9664 · opened on Oct 8, 2025

• ENH: extreme value theory with covariates, regression

  statsmodels/statsmodels#9663 · opened on Oct 8, 2025