We have estimated the model experience using OLS based on a sample of 4 observations. We know that the matrix of explanatory variables is and we are told that the OLS residuals are: We can immediately say that the residual vector:

Question

We have estimated the model    experience    using OLS based on a sample of 4 observations. We know that the matrix of explanatory variables is   and we are told that the OLS residuals are:   We can immediately say that the residual vector:

Accepted Answer

is reported incorrectly because it is not orthogonal to the second column of   .

Answer

is reported correctly but shows a poor fit because   .

Answer

is reported incorrectly because it should be a    vector.

Answer

is reported correctly because it sums to zero.

Answer

is reported correctly because it is linearly independent of columns of   .

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We have estimated the model experience using OLS based on a sample of 4 ob...

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