The Classical model makes two roughly equivalent assumptions to ensure the indep

Question

The Classical model makes two roughly equivalent assumptions to ensure the independence of the explanatory variables from the equation's randomly distributed residuals: either the explanatory variables are assumed fixed in repeated resembling, or the explanatory variables change in each sample but do so randomly. Why are these assumptions equivalent, i e. why would either one of these assumptions ensure the independence of the explanatory variables from the (randomly distributed) residuals? Explain.

Explanation / Answer

The two assumptions are sam because one is the assumption of randomizaton and another is the assumption of repetition, both these assumptions ensure independence of data.

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