Footnotes

The measurements are patterned after the values plotted in Figure 1 of Montgomery and Mastrangelo (1991).

The upper chart in Figure 49.4 resembles Figure 2 of Montgomery and Mastrangelo (1991), who conclude that the process is in control.

For a discussion of these roles, refer to Hunter (1986).

Refer to Montgomery and Mastrangelo (1991) and the discussion that follows their paper.

Figure 49.6 is similar to Figure 5 of Montgomery and Mastrangelo (1991).

Also refer to Chapter 5 of Wheeler and Chambers (1986) for an explanation of the effects of subgrouping and sources of variation on control charts.

For the remainder of this section, unless otherwise indicated, it is assumed that the outliers are deleted from the data set FILM.

This notation is used in Chapter 3 of Wetherill and Brown (1991), which discusses this issue.

For a review of related methods, refer to Al-Salti and Statham (1994).

Refer to Chapter 1 of Wheeler (1991a) for a similar example.

The TRENDVAR= option is not available in the IRCHART statement.

Refer to Schilling and Nelson (1976) and Wheeler (1991b).

Refer to Wheeler and Chambers (1986) for a discussion of subgrouping.

Refer to Jackson (1980).