what is the difference between normal distribution and heteroskedasticity is skewness considered a variable in regression what is nonnormal distribution in residuals is non normative residuals in stata non-normal residuals definition why do regression tests show nonnormality why are residuals nonnormal does stata detect heteroskedasticity of residuals why does qqt use non-normal residuals what is non normality in residuals is normal distributions of residuals necessary what is the non normal residuals graph when to use heteroskedasticity and nonnormality does logarithmic regression rule out normality what is non-normality in the residual which statement is correct about nonnormality in residual data? why is regression regression nonnormal what is non normality in residuals how to determine non normal residuals does logarithmis predict regression