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What is quality assurance?
- Reactive
- Emphasis is on finding and correcting defects before they reach the market.
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What is strategic approach?
- Proactive
- Focuses on preventing mistakes from occurring.
- Greater emphasis on customer satisfaction.
- Involves all manager and workers in a continuing effect to improve quality.
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What are the four determinants of quality?
- Quality of design
- Quality of comformance
- Ease-of-Use and user instructions
- After-the-sale service
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What is Quality of design?
Intention of designers to include or exclude features in a product or service.
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What is Quality of comformance?
The degree to which goods or services conform to the intent of the designers.
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What is Ease-of-Use and user instructions?
Increase the likelihood that a product will be used for its intended purpose and in such a way that it will continue to function properly and safely.
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What is After-the-sale service?
Taking care of issues and problems that arise after the sale.
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What is International Organization for Standardization (ISO)?
promotes worldwide standards for the improvement of quality, productivity, and operating efficiency through a series of standards and guidelines.
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What is ISO 9000?
Set of international standards on quality management and quality assurance, critical to international business.
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What is ISO 14000?
A set of international standards for assessing a company's environmental performance.
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What is plan-do-study-act (PDSA) cycle?
A framework for problem solving and improvement activities.
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What are the steps in Plan?
- Begin by studying and documenting the current process.
- Collect data ont he process or problem.
- Analyze the data and develop a planf or improvement
- Specify measures for evaluating the plan.
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What are the steps in Do?
Implement the plan, document any changes made, collect data for analysis.
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What are the steps in Study?
- Evaluate the data collection during the do phase.
- Check results against goals formulated during the plan phase.
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What are the steps in Act?
- If the results are successful, standardize the new method and communicate it to the relevant personnel.
- Implement training for the new method.
- If unsuccessful, revise the plan and repeat the process.
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The 5W2H Approach
- What?
- Why?
- Where?
- When?
- Who?
- How?
- How much?
*SEE PG. 446*
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What are the two types of variation?
- Random variation (common cause)
- Assignable variation (special cause)
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What are random (common cause) variation?
Natural variation in the output of a process, created by countless minor factors.
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What are assignable (special cause) variation?
A variation whose cause can be identified.
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What are control charts?
- A time ordered plot of representative sample statistics obtained from an ongoing process (e.g. sample means), used to distinguish between random and nonrandom variability.
- Upper and lower control limits define the range of acceptable variation.
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What are variables?
Generate data that are measured.
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What are attributes?
Generate data that are counted.
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What are the two control charts for variables?
- Mean control charts
- Range control charts
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What are mean control charts?
- Used to monitor the central tendency of a process.
- x-bar charts
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What are range control charts?
- Used to monitor the process dispersion.
- R-charts
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What are the two control charts for attributes?
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What are p-charts?
Control chart used to monitor the proportion of defectives in a process.
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What are c-charts?
Control chart used to monitor the number of defects per unit.
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What are supply chains?
- The sequence of organization - their facilities, functions, and activities - that are involved in producing and delivering a product or service.
- Sometimes referred to as value chains.
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What are the main steps of the purchasing cycle?
- 1. Purchasing receives the requisition
- 2. Purchasing selects a supplier
- 3. Purchasing places the order with a vendor
- 4. Monitoring orders
- 5. Receiving orders
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When choosing suppliers, what is vendor analysis?
Evaluating the sources of supply in terms of price, quality, reputation, and service.
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What are the three inventory issues in supply chain management?
- Inventory location
- Inventory velocity
- The bullwhip effect
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What are the two types of inventory location?
- Centralized inventories
- Decentralized inventories
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What is inventory velocity?
The speed at which goods move through a supply chain.
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What is the bullwhip effect?
Inventory oscillations that become increasingly larger looking backward through the supply chain.
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What are radio frequency identification (RFID)?
A technology that uses radio waves to identify objects, such as goods in supply chains.
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How are RFID similar to barcodes systems but better?
- Are able to convey much more information.
- Do not require line-of-sight for reading.
- Do not need to be read one at a time.
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What are the two types of RFID?
- Active - on-board power supply, more expensive
- Passive - less expensive
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What is E-business?
- the use of electronic techonlogy to facilitate business transactions.
- Applications include - internet buying and selling, e-mail, order and shipment tracking, electronic data interchange, product and service promotion, and provide information about products and services.
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What are the three costs of quality?
- Appraisal Costs
- Prevention Costs
- Failure Costs
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What are appraisal costs?
Costs of activities designed to ensure quality or uncover defects.
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What are prevention costs?
All TQ training, TQ planning, customer assessment, process control, and quality improvement costs to prevent defects from occurring.
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What are failure costs?
- costs insurred by defective parts/products or faulty services.
- Internal failure costs - costs incurred to fix problems that are detected before the product/service is delivered to the customer.
- External failure costs - all costs incurred to fix problem that are detected after the product/service is delivered to the customer.
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