Table 2 Data on M2W crankshaft production and rejection (five weeks).

From: Enhancement in production efficiency using DMAIC methodology of six sigma

Weeks

Production

Rejection

Pitting defect

Total length undersize defect

Un-filling defect

Flash defect

Bend defect

1

45,633

1406

461

410

432

65

38

2

46,018

1389

422

435

407

58

67

3

46,326

1379

447

411

436

48

37

4

46,494

1435

475

462

442

34

22

5

46,123

1423

446

427

410

78

62

Total

230,564

7032

2251

2145

2127

283

226