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ODC1 (week 1)
Organizational management (chapter 10)
| Term | Definition |
|---|---|
| inspection | Appraisal of goods and services |
| Quality of conformance | A product/service conforms to specifications |
| Statistical process control | Statistical evaluation of the output of a process |
| Random variation | Natural variation in the output of a process created by countless minor factors |
| Assignable variation | In process output variation whose cause can be identified if nonrandom variation |
| Sampling distribution | A theoretical distribution of sample statistics |
| Central limit theorem | The distribution of sample averages tends to be normal regardless of the shape of the process distribution |
| Control charts | A time ordered plot of sample stats used to distinguish between random and nonrandom variablitity |
| Control limits | The dividing lines between random and nonrandom deviations from the mean of the distribution |
| TYPE I ERROR | Concluding a process is not in control when it actually is |
| TYPE II ERROR | Concluding a process is in control when it is not |
| variable | Generate data that is measured |
| attributes | Generate data that are counted |
| Mean control chart | Used to monitor the central tendency of the of a process |
| Range control charts | Used to monitor process dispersion |
| P chart | Control chart attributes used to monitor the proportion of defective items in a process |
| C chart | Control chart for attributes used to monitor the number of defects per unit |
| Run test | A test for patterns in a sequence |
| run | Sequence of observations with a certain characteristic |
| Specifications | A range of acceptable values established by engineering design or customer requirements |
| Process variability | Natural or inherent variability in a process |
| Control limits | stat limits that reflect the extent to which sample stats such as means and ranges can vary due to randomness |
| Process capability | The inherent variability of process output relative to the variation allowed by the design specification |