At an umbrella manufacturing facility, umbrella handles are measured and then removed from the assembly line if they don't meet specifications. A daily report indicates how many rejected handles were produced by each of three presses at the facility during each of three shifts. A quality engineer wants to determine whether press and shift are associated.
As part of the initial investigation, the engineer creates a bar chart to compare the number of rejected handles for each machine and shift.
The highest number of rejected handles is made by machine 2 during the first shift. The lowest number of rejected handles is made by machine 2 during the 3rd shift.