The following numbers are observations on tensile strength of synthetic fabric specimens selected from a production process at equally spaced time intervals. Construct appropriate control charts, and comment (assume an assignable cause is identifiable for any outof- control observations).

Transcribed Image Text:

1. 51.3 51.7 49.5 2. 51.0 50.0 49.3 3. 50.8 51. 49.0 4. 50.6 51.1 49.0 5. 49.6 50.5 50.9 6. 51.3 52.0 50.3 7. 49.7 50.5 50.3 8. 51.8 50.3 50.0 9. 48.6 50.5 50.7 10. 49.6 49.8 50.5 11. 49.9 50.7 49.8 12. 49.6 48.4 50.0 13. 49.8 51.2 49.7 14. 50.4 49.9 50.7 15. 49.4 49.5 49.0 16. 50.7 49.0 50.0 17. 50.8 49.5 50.9 18. 48.5 50.3 49.3 19. 49.6 50.6 49.4 20. 50.9 49.4 49.7 21. 54.1 49.8 48.5 22. 50.2 49.6 51.5