Quality Assurance Trade-Offs in Statistical Process Control

Chapter Eleven Quality and Assurance

Fig. 11-1 The Trade-Off BetweenQuality and Cost

Fig. 11-2 Probability Density of a Uniform Variate on (0, 1)

Fig. 11-3 Density of the Sum of ThreeUniform Random Variables

Fig. 11-4 Density of the Sum of ThreeUniform Random Variables andthe Normal Approximation

Fig. 11-5 Frequency Histogram of 150 Measurements

Fig. 11-6 Theoretical Normal Curve of Arm Length

Fig. 11-7 Chart for Tracking Arm Data

Fig. 11-8 R Chart for Tracking Arm Data

Fig. 11-9 Preliminary p chart for Xezet floppy disk data (Refer to Example 11.2)

Fig. 11-10 Revised p chart for Xezet floppy disk data (Refer to Example 11.2)

Fig. 11-11 Successive Cycles in Process Monitoring

Fig. 11-12 The Behavior of G(n, k) as afunction of k (Refer to Example 11.5)

Fig. 11-13 The Ideal OC Curve

Fig. 11-14 OC Curve for Spire Records (n = 10)

Fig. 11-15 Revised OC Curve for Spire Records (n = 25)

Fig. 11-16 Two Realizations of a Sequential Sampling Plan

Fig. 11-17 Sequential Sampling Planfor Spire Records (Refer to Example 11.8)

Fig. 11-18 ASN Curve for Spire Records (estimated)

Fig. 11-19 AOQ Curves forSpire Records(Refer to Example 11.9)

Fig. 11-20 The House of Quality:The QFD Planning Matrix