A SERVICE OF

logo

Open as PDF
next previous
61
More Hypothesis Testing
model specified by the simple path diagram above specifies that the covariance (and
thus the correlation) between age and vocabulary is 0.
The second method of constraining a covariance parameter is the more general
procedure introduced in Example 1 and Example 2.
E From the menus, choose Diagram > Draw Covariances.
E Click and drag to draw an arrow that connects vocabulary and age.
E Right-click the arrow and choose Object Properties from the pop-up menu.
E Click the Parameters tab.
E Type 0 in the Covariance text box.
E Close the Object Properties dialog box.
Your path diagram now looks like this: