Chapter Questions
Define model specification.
Define model identification.
Define model estimation.
Define model testing.
Define model modification.
Determine the number of distinct values (variances and covariances) in the following variance-covariance matrix $S$ :$$S=\left[\begin{array}{lll}1.0 & & \\.25 & 1.0 & \\.35 & .45 & 1.00\end{array}\right]$$
How many distinct values are in a variance-covariance matrix for the following variables \{hint: $[p(p+1) / 2]$ :a. Five variablesb. Ten variables
A saturated model with $p$ variables has $p(p+3) / 2$ free parameters. Determine the number of free parameters for the following number of variables in a model:a. Three observed variablesb. Five observed variablesc. Ten observed variables