Chap009A - Chapter 09A - Process Capability and SPC Chapter...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Chapter 09A - Process Capability and SPC Chapter 09A Process Capability and SPC True / False Questions 1. Variation in production systems that is caused by factors that can be clearly identified and possibly even managed is called assignable variation. TRUE Level: Easy 2. An example of assignable variation in a production system may be that workers are not identically trained. TRUE Level: Easy 3. An example of assignable variation in a production system may be that a machine is not adjusted properly. TRUE Level: Easy 4. Variation that is inherent in a production process itself is called assignable variation. FALSE Level: Easy 5. Variation that is inherent in a production process itself is called common variation. TRUE Level: Easy 9A-1 Chapter 09A - Process Capability and SPC 6. It is impossible to have zero variability in production processes. TRUE Level: Easy 7. Genichi Taguchi's view of the cost of quality is that variance is a discontinuous function. FALSE Level: Easy 8. The capability index is used to gauge economic changes in service systems. FALSE Level: Easy 9. Process control is concerned with monitoring quality after the product or service has been produced. FALSE Level: Easy 10. Statistical process control involves testing random samples of output from a process to determine whether the process is producing items within a pre-selected range. TRUE Level: Easy 11. Measurement by attributes means taking a sample, measuring the attribute in question and determining the level of quality in the population from which the sample was drawn. FALSE Level: Medium 9A-2 Chapter 09A - Process Capability and SPC 12. Attributes are those quality characteristics that are classified as either conforming or not conforming to specifications. TRUE Level: Easy 13. A quality control chart has upper and lower control limits expressed as lines on a chart. As long as the sample values fall between these two lines there is no need to investigate process behavior. FALSE Level: Easy 14. The "p" chart is only useful for sampling that deals with continuous variables. FALSE Level: Easy 15. The value for "z" used in quality control charts is based on the degree of confidence you want to have in the resulting UCL and LCL values. TRUE Level: Easy 16. If the fraction defective is 0.12 based on a sample size of 16, the standard deviation used in the "p" chart is about 0.08. TRUE Level: Medium 9A-3 Chapter 09A - Process Capability and SPC 17. If the fraction defective is 0.4 based on a sample size of 100, the standard deviation used in the "p" chart is about 0.10. FALSE Level: Easy 18. To obtain a 99.7 percent confidence level in a "p" chart we would use a value of 3 for "z". FALSE Level: Easy 19. Acceptance sampling is performed on goods that already exist to determine what percentage of items conforms to specifications....
View Full Document

This note was uploaded on 07/17/2011 for the course MBA 587 taught by Professor None during the Spring '11 term at Missouri (Mizzou).

Page1 / 21

Chap009A - Chapter 09A - Process Capability and SPC Chapter...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online