
200 Six Sigma Case Studies with Minitab
®
The graph in Figure12.8 shows the
values of the two operators. The
averages of the
values are joined with straight lines. Notice that, for each
part, the
values of the two operators are very close. Hence, this graph
also means that the reproducibility of the measurement system is good. The
graph in Figure12.9 too shows that the average diameters of all the parts for
the two operators are almost equal. (Notice that the line joining the averages
of the two operators is almost horizontal.) Hence, this graph too shows that
the reproducibility of the measurement system is good.
The graph in ...