TAILIEUCHUNG - Operations Management-12e (14)

Chapter 10. Quality © 2015 McGraw­Hill Education. All rights reserved. No reproduction or distribution without the prior written consent of McGraw­Hill 10: Learning should be able to:.LO Explain the need for quality Discuss the basic issues of List and briefly explain the elements of the control Explain how control charts are used to monitor a process, and . the concepts that underlie their Use and interpret control Perform run tests to check for nonrandomness in process Assess process capability. 10­2 What is Quality Control?. Quality Control. A process that evaluates output relative to a standard and . takes corrective action when output doesn’t meet standards. If results are acceptable no further action is required Unacceptable results call for correction action Inspection alone is not is generally not sufficient to achieve . a reasonable level of quality. Most organization rely upon some inspection and a great deal of . process control to achieve an acceptable level of qualityLO 10­3 Inspection. Inspection. An appraisal activity that compares goods or services to a . standard. Inspection issues: 1. How much to inspect and how often. 2. At what points in the process to inspect. 3. Whether to inspect in a centralized or on­site location. 4. Whether to inspect attributes or variablesLO 10­4 Control Process. Sampling and corrective action are only a part of the control . process. Steps required for effective control:. Define: What is to be controlled? Measure: How will measurement be accomplished? Compare: There must be a standard of comparison Evaluate: Establish a definition of out of control Correct: Uncover the cause of nonrandom variability and fix it Monitor: Verify that the problem has been 10­5 Control Charts: . The Voice of the Process. Control Chart. A time ordered plot of representative sample statistics . obtained from an ongoing process (. sample means), used . to distinguish between random and nonrandom variability. Control limits. The dividing lines between random and nonrandom deviations . from the mean of the distribution. Upper and lower control limits define the range of acceptable . variationLO 10­6 Control Charts for Variables. Variables generate data that are measured. Mean control charts. Used to monitor the central tendency of a process. “x­bar” charts Range control charts. Used to monitor the process dispersion R 10­7 Establishing Control Limits k. k. xi Ri. x i 1 R i 1 k k. where where. x Average of sample means R Average of sample ranges. x i mean of sample i Ri R

• Sáng kiến kinh nghiệm
• Operations management
• Ebook Operations management
• Operations performance
• Operations strategy
• Process design
• Competitive advantage
• Operations consulting
• Business process reengineering
• Stages of operations consulting
• Operations consulting tool kit
• Aggregate sales
• Operations planning
• Operations planning activities
• Aggregate operations plan
• Lecture Operations management
• Quản lý vận hành
• Produce goods
• Critical decisions
• Global environment
• Global strategies
• Fundamentals of operations management
• Operations management strategy
• Transformation process
• Operational planning
• Supply chain management
• Supply chain processes
• Supply chain
• Aggregate operations plans
• Managing operations
• Lecture Managing operations
• Balancing objectives
• Operations competitive dimensions
• Strategy design process
• Productivity measures
• Bài giảng Quản lý vận hành
• Operations function
• Process management
• Scope of operations management
• Decision making