Skip to main content

Ctrl+K

statsmodels

Installing
Getting started
User Guide
Examples

GitHub
PyPI
DOI

Installing
Getting started
User Guide
Examples
API Reference
About statsmodels
Developer Page
Release Notes

GitHub
PyPI
DOI

Section Navigation

endog, exog, what’s that?
Import Paths and Structure
Fitting models using R-style formulas
Pitfalls

Linear Regression
Generalized Linear Models
Generalized Estimating Equations
Generalized Additive Models (GAM)
Robust Linear Models
Linear Mixed Effects Models
Regression with Discrete Dependent Variable
Generalized Linear Mixed Effects Models
ANOVA
Other Models othermod

Time Series analysis tsa
Time Series Analysis by State Space Methods statespace
Vector Autoregressions tsa.vector_ar

Methods for Survival and Duration Analysis
Nonparametric Methods nonparametric
Generalized Method of Moments gmm
Other Models miscmodels
Multivariate Statistics multivariate

Statistics stats
Contingency tables
Multiple Imputation with Chained Equations
Treatment Effects treatment
Empirical Likelihood emplike
Distributions
Graphics
Input-Output iolib
Tools
Working with Large Data Sets
Optimization

The Datasets Package

Sandbox

User Guide
Linear Regression
statsmodels.regression.linear_model.OLSResults
statsmodels.regression.linear_model.OLSResults.cov_HC1

statsmodels.regression.linear_model.OLSResults.cov_HC1#

OLSResults.cov_HC1#: Heteroscedasticity robust covariance matrix. See HC1_se.

previous

statsmodels.regression.linear_model.OLSResults.cov_HC0

next

statsmodels.regression.linear_model.OLSResults.cov_HC2

On this page

OLSResults.cov_HC1

© Copyright 2009-2025, Josef Perktold, Skipper Seabold, Jonathan Taylor, statsmodels-developers.

Created using Sphinx 9.1.0.

Built with the PyData Sphinx Theme 0.20.0.