This is a T-shaped matrix diagram. A T-type matrix is the combination of two L-type matrices joined by a single list. There are three groups of items where group A is related to both group B and group C. But group B is not connected to group C. This matrix chart is used to analyze the relationship between three factors with direct or indirect relationships. . In this example a T-shaped matrix diagram is used by the program manager for allocating human resources to multiple improvement projects. As it allows two sets of data to be compared with a third one. For more examples, please check out our edrawMax template gallery.