The Taylor Tool company manufactures hardened tool steel. The specifications for one of its products products, A768C,
Question:
b. Use the charts constructed in a part to estimate the mean hardness and standard deviation of this process.
c. What percentage of the process output fails to comply with specification?
d. construct and R charts for the data and repeat parts a through c.
e. Compare your results using an s chart and an R chart to estimate process variation. Which would you prefer and why?
Transcribed Image Text:
Brinell Hardness (Kgs per mm2) Sample 1 23 5 6 78 9 10 533 554 587 531 579 559 617575 516 569 540 549 561550 528 545 550582 544 593 561 613 542 536 606 550 565 560 540 544 529 547 524 513 535 563 560556 512 563 555 572 528 526 566 556 556559 520 548 533 558 602 529 545 574 548 514 536 54 539 583 512 574 558 524 562506 531 52 552 559 542565 532 553 584585 545 563 555 533 536 555 551 539 558557 562 547 10 537 587 553 546 528 528 545 540 542 490 11 528 589 523 536 543 565 530 597 558 568 12 540 592 555 603 524 499 520 550 522 496 13 575 562 552 575 596 539 529 555 578 555 14 509 541 542 533 548 571 578 616 560 570 15 529 556 542 530 514 531 549 553 551 596 16 536 559 530 528 569 587 581 542 557 584 17 516 544 552 561 580 557 563 566 557 533 18 564 584 545 580 539 573 586 548 537 617 19 584 555 499 566 541 576 545 564 593 578 20 529 569 527 521 565 606 578 559 538 543 21 545 517 532 568 507 532 536 554 524 550 22 569 505 525 586 517 498 576 528 534 566 23 531 522 535 552 552 526 545 560 592 532 24 504 528 597 540 546 536 588 528 544 573 25 571 574 561 553 566 520 485 547 611 534 Brinell Hardness (Kgs per mm2) Sample 1 23 5 6 78 9 10 533 554 587 531 579 559 617575 516 569 540 549 561550 528 545 550582 544 593 561 613 542 536 606 550 565 560 540 544 529 547 524 513 535 563 560556 512 563 555 572 528 526 566 556 556559 520 548 533 558 602 529 545 574 548 514 536 54 539 583 512 574 558 524 562506 531 52 552 559 542565 532 553 584585 545 563 555 533 536 555 551 539 558557 562 547 10 537 587 553 546 528 528 545 540 542 490 11 528 589 523 536 543 565 530 597 558 568 12 540 592 555 603 524 499 520 550 522 496 13 575 562 552 575 596 539 529 555 578 555 14 509 541 542 533 548 571 578 616 560 570 15 529 556 542 530 514 531 549 553 551 596 16 536 559 530 528 569 587 581 542 557 584 17 516 544 552 561 580 557 563 566 557 533 18 564 584 545 580 539 573 586 548 537 617 19 584 555 499 566 541 576 545 564 593 578 20 529 569 527 521 565 606 578 559 538 543 21 545 517 532 568 507 532 536 554 524 550 22 569 505 525 586 517 498 576 528 534 566 23 531 522 535 552 552 526 545 560 592 532 24 504 528 597 540 546 536 588 528 544 573 25 571 574 561 553 566 520 485 547 611 534 X and s
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ISBN: 978-0131197565
1st edition
Authors: Harold Aikens
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