The OLS Estimator for the Multiple Regression Model in Matrix

question 29

Multiple Choice

The OLS estimator for the multiple regression model in matrix form is

• A)(X'X)-1X'Y
• B)X(X'X)-1X' - PX
• C)(X'X)-1X'U
• D)(XΩ-1X)-1XΩ-1Y

---

Definitions:

Mirror Neurons

Certain neurons that are activated both when one performs an action oneself and when one observes another person perform that action.

Mirror Neurons

Neurons that fire both when an individual acts and when the individual observes the same action performed by another. This mechanism is thought to be connected to empathy and understanding of others' actions.

Interneurons Neurons

Specialized neurons that serve as the link between sensory neurons and motor neurons, playing a crucial role in reflexes and neural circuits.

Rehearsal Cells

Neurons believed to be involved in the process of mentally rehearsing or practicing actions or thoughts.