Hi! Can you help me with the following question?

For each of the following statements, please identify what linear regression model assumption is being violated and what effect it has (if any) on the parameters estimates, the standard errors, and the test statistics.

a.Relevant variables are omitted from the regression.

b.The error variance is not constant and is related to the level of the independent variable.

c.Independent variables in the regression are highly correlated with each other.

Thanks!