IBM® SPSS® Amos™ 28

The parsimony ratio (James, Mulaik & Brett, 1982; Mulaik, et al., 1989) expresses the number of constraints in the model being evaluated as a fraction of the number of constraints in the independence model:

,

where d is the degrees of freedom of the model being evaluated and is the degrees of freedom of the independence model. The parsimony ratio is used in the calculation of PNFI and PCFI (see Parsimony adjusted measures).

Use the \pratio text macro to display PRATIO on a path diagram.