• Demonstrate a range of quality techniques to monitor, analyse and improve manufacturing processes.
• Evaluate a range of business improvement techniques and their impact on business performance.
Question 1:
• Summarize quality guru Joseph Juran’s major contributions to Total Quality Management.
• Use example to discuss quality management method “Ten steps to continuous quality improvement” proposed by Juran.
Question 2:
The Oceanside Apparel Company manufactures bearings. The diameter specified from the bearing is 10mm. Every 1 hour, five bearings are sampled and their diameters are measured and recorded (see Table Q2). Fifteen of these samples of five bearings are gathered.
(a) Choose suitable control charts (with 3-sigma limits), compute CL, LCL, UCL.
(b) Use SPSS to draw control sample points and control charts.
(c) Analyse whether or not the process is in control using the charts.
Table Q2 (Unit: mm)
Sample 1 Sample 2 Sample 3 Sample 4 Sample 5
10.01 9.99 9.96 10.01 10.02
9.98 10.01 10.01 10.01 10.03
10.00 10.01 9.98 9.99 9.99
10.02 10.03 10.02 10.03 9.98
10.04 10.00 9.98 9.98 10.02
Sample 6 Sample 7 Sample 8 Sample 9 Sample 10
9.99 9.95 10.01 9.99 9.98
10.01 9.97 10.01 10.04 9.99
10.02 10.01 10.00 10.06 9.96
10.00 10.01 9.99 10.01 9.98
9.99 10.02 10.01 10.02 9.98
Sample 11 Sample 12 Sample 13 Sample 14 Sample 15
10.00 10.02 10.00 10.03 10.01
9.99 10.02 10.01 9.98 10.01
10.03 10.03 9.98 9.99 10.00
10.03 10.04 10.02 9.96 10.02
10.01 10.01 10.02 9.98 10.02