Hello list:
(This is probably a stupid question). Is there a "quick and easy" way to
confirm the gauss-markov conditions of a linear multiple regression model?
That the mean of the residuals is 0 can easily be tested for. The normality of
the residuals as well (shapiro-wilk?). But what about homoscedasticity? And
independence of residuals with respect to the model variables?
Thanks in advance
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