a) Describe Quality. What are various quality measures.

b) A steel chairs manufacturer is also the quality inspector in his manufacturing unit this parameter of a chair being defective are uneven welding, poor finish, loose drawers, even griding etc. He randomly examined:-

12 chair with following observations:-

Chairs 1 2 3 4 5 6 7 8 9 10 11 12

Defect 7 3 5 11 6 9 4 0 8 7 10 05

(i) Design a suitable control chart and control limit for the process.

(ii) If 13th chair is with 12 defects what would you comment about the procedure?