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:

Genetic Material

The molecules that carry the biological information necessary for an organism's growth, development, functioning, and reproduction, primarily DNA.

Developmental Scientist

A researcher who studies how human beings change over the course of their life, particularly during childhood and adolescence, across various domains such as cognitive, emotional, and social development.

Sexual Reproduction

A biological process by which organisms create offspring through the combination of genetic material from two different genders.

Genetic Traits

Characteristics or features that are passed from parents to offspring through genes.