Preparing the Data for Diagramming
To produce the diagram, begin with data in two columns of a data table.
Figure 12.2 Ishikawa Diagram
Some sample data (Montgomery, 1996) is shown in Figure 12.3, from the Ishikawa.jmp sample data table.
Figure 12.3 A Portion of the Ishikawa Sample Data
Notice that the Parent value “Defects in circuit board” (rows 1–5) has many causes, listed in the Child ...