Page 205 - DMGT501_OPERATIONS_MANAGEMENT

Unit 6: Quality Assurance and Control

6.19 Keywords Notes

Acceptance Sampling: The acceptance of a consignment of items on the basis of its quality.
Control Chart: A graphical representation between the order of sampling along x-axis and
statistics along the y-axis.
Dispersion: The extent to which the data are scattered about the zone of central tendency.
Measure of Central Tendency: A parameter in a series of statistical data which reflects a central
value of the same series.
Quality Circles: Voluntary groups engaged in managing quality.
Quality Function Deployment: represents a comprehensive analytic schema or framework for
quality.
Quality Control: Working to a set standard of quality which is achievable and which has a ready
market.

Statistical Quality Control: The application of statistical techniques to determine how far the
product confers to the standards of quality and precision and to what extent its quality deviates
from the standard quality.
Taguchi Methods: They provide a powerful means for isolating critical product design parameters
that need to be controlled in the manufacturing process.

Total Quality Management: A quality focused customer oriented integrative management
method that emphasizes continuing and cumulative gains in quality, productivity and cost
reduction.

6.20 Self Assessment

State whether the following statements are true or false:
1. The objective of quality control is to make change acceptable to everyone.
2. The number of defective pieces and number of defects can be classified as attribute data.

3. The measures of central tendency are mean, median, mode and range.
4. Variance is square root of standard deviation.
5. The loss of a liquid substance through evaporation during heating is an assignable cause.
6. A wrong reading of electric current due to faulty meter is an assignable cause.

7. The probability of error in 100 per cent inspection is very low.
8. Statistical Quality Control can also lead to an improvement in product and process design.
9. Model 1 of ISO: 9000 limits itself to demonstration of supplies ability to test and inspect.
10. There is no great distinction between KAIZEN and innovation.

Fill in the blanks:
11. In a QC, a team comprises ........................ to ........................ members.
12. JIT realizes the benefits of ........................
13. Six sigma stresses the goals of ........................ defects is achievable.

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