2.15 The final-inspection defect report for assembly line A12 is reported in a Pareto diagram.

a. What is the total defect count in the report?

b. Verify the 30.0% listed for “Scratch.”

c. Explain how the “cum % for bend” value of 90.7% was obtained and what it means.

d. Management has given the production line the goal of reducing their defects by 50%. What two defects would you suggest they give special attention to in working toward this goal? Explain.

150 100- Count 50 Product Defects 0 0 Defect Blem. Scratch Chip Bend Dent Others Count 56 45 23 12 8 6 Percent 37.3 30.0 15.3 8.0 5.3 4.0 Cum % 37.3 67.3 82.7 90.7 96.0 100.0 100 80 808 60 40 20 20 Percent