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• 13:03, 20 August 2026 WikiSysopIG talk contribs created page Heteroskedasticity-consistent standard errors (Created page with "'''Heteroskedasticity-consistent standard errors''' ('''HC standard errors''') are standard-error estimators used in regression analysis to provide inference that is robust to heteroskedasticity of the regression errors. In an ordinary least squares (OLS) regression: <math> \mathbf{y} = \mathbf{X}\boldsymbol{\beta} + \boldsymbol{\epsilon} </math> the conventional OLS covariance matrix assume...")