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• 13:02, 20 August 2026 WikiSysopIG talk contribs created page Heteroskedasticity (Created page with "'''Heteroskedasticity''' is a condition in regression analysis in which the variance of the error term is not constant across observations. In a regression model: <math> Y_i = \beta_0 + \beta_1X_{1,i} + \cdots + \beta_kX_{k,i} + \epsilon_i </math> homoskedasticity requires the conditional variance of the error term to be constant: <math> \operatorname{Var}(\epsilon_i\mid\mathbf{X}) = \sigma^2 </math> Under heteroskedasticity, the conditio...")