In a Two Regressor Regression Model, If You Exclude One

question 5

Multiple Choice

In a two regressor regression model, if you exclude one of the relevant variables then

• A)it is no longer reasonable to assume that the errors are homoskedastic.
• B)OLS is no longer unbiased, but still consistent.
• C)you are no longer controlling for the influence of the other variable.
• D)the OLS estimator no longer exists.

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Definitions:

Coagulation

The process by which blood changes from a liquid to a gel, forming a blood clot, which is an essential mechanism to prevent excessive bleeding when the vascular system is injured.

Fibrinolysis

The biological process by which fibrin clots, the products of coagulation, are broken down, thereby preventing blood clots from growing and becoming problematic.

Intrinsic Pathway

A series of steps in blood coagulation that is initiated by internal trauma, leading to the activation of Factor X independent of tissue factor.

Extrinsic Pathway

A pathway for blood coagulation that is initiated by external trauma leading to blood escaping from the vascular system.