Restricted least squares (RLS). If the dependent variables in the restricted and unrestricted regressions are not the same, you can use the following variant of the F test given in Eq. (4.56)

where RSSr = residual sum of squares from the restricted regression, RSSur = residual sum of squares from the unrestricted regression, m = number of restrictions, and (n - k) = d.f. in the unrestricted regression.
Just to familiarize yourself with this formula, rework the model given in Table 4-4.

(RSS RSS)/m mnk