The matrix below describes what kind of covariance structure in a multilevel model?
$\left( \begin{array} { c c c c }
1 & \rho & \rho ^ { 2 } & \rho ^ { 3 } \
\rho & 1 & \rho & \rho ^ { 2 } \
\rho ^ { 2 } & \rho & 1 & \rho \
\rho ^ { 3 } & \rho ^ { 2 } & \rho & 1
\end{array} \right)$
A)Diagonal
B)AR(1)
C)Variance components
D)Unstructured

Question

The matrix below describes what kind of covariance structure in a multilevel model?
$\left( \begin{array} { c c c c } 
1 & \rho & \rho ^ { 2 } & \rho ^ { 3 } \
\rho & 1 & \rho & \rho ^ { 2 } \
\rho ^ { 2 } & \rho & 1 & \rho \
\rho ^ { 3 } & \rho ^ { 2 } & \rho & 1
\end{array} \right)$
A)Diagonal
B)AR(1)
C)Variance components
D)Unstructured

Quizplus · Accepted Answer

The Answer is D

The Matrix Below Describes What Kind of Covariance Structure in a Multilevel