The GLS Assumptions Include All of the Following, with the Exception

question 36

Short Answer

The GLS assumptions include all of the following, with the exception of a. the $\boldsymbol { X } _ { i }$ are fixed in repeated samples.
b. $X _ { i }$ and $u _ { i }$ have nonzero finite fourth moments.
c. $E \left( \boldsymbol { U } \boldsymbol { U } ^ { \prime } \mid \boldsymbol { X } \right) = \boldsymbol { \Omega } ( \boldsymbol { X } )$ , where $\boldsymbol { \Omega } ( \boldsymbol { X } )$ is $n \times n$ matrix-valued that can depend on $\boldsymbol { X }$ .
d. $E ( \boldsymbol { U } \mid \boldsymbol { X } ) = \mathbf { 0 } _ { n }$ .

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Definitions:

Regret

Involves feeling sorry for one’s misfortunes, limitations, losses, transgressions, shortcomings, or mistakes.

Anger

An emotional response to a real or imagined threat or provocation

Suicide Note

A suicide note is a message left by an individual who intends to take their own life, often explaining the reasons behind the decision or expressing last thoughts to loved ones.

Control Over Events

The extent to which individuals believe they have power over outcomes and events in their lives, a concept often related to locus of control.