The matrix below describes what kind of covariance structure in a multilevel model? $$\left( \begin{array} { l l l l }
1 & 0 & 0 & 0 \
0 & 1 & 0 & 0 \
0 & 0 & 1 & 0 \
0 & 0 & 0 & 1
\end{array} \right)$$
A)Unstructured
B)AR(1)
C)Diagonal
D)Variance components

Question

The matrix below describes what kind of covariance structure in a multilevel model? $$\left( \begin{array} { l l l l } 
1 & 0 & 0 & 0 \
0 & 1 & 0 & 0 \
0 & 0 & 1 & 0 \
0 & 0 & 0 & 1
\end{array} \right)$$
A)Unstructured
B)AR(1)
C)Diagonal
D)Variance components

Quizplus · Accepted Answer

The matrix is a diagonal matrix, which means that the covariances between the variables are zero. This is the covariance structure of a variance components model.

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