Statistical_Process_Control

Statistical_Process_Control - Statistical Process Control...

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Statistical Process Control Dr. Jeffrey S. Appel
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CHECK SHEET The Check Sheet is a data-gathering and interpretation tool. A Check Sheet is used for: Distinguishing between fact and opinion How does the community perceive the effectiveness of the school in preparing students for the world of work? Gathering data about how often a problem is occurring How often are students missing classes? Gathering data about the type of problem occurring What is the most common type of word processing error created by the students-grammar, punctuation, transposing letters, etc.?
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Steps to Create a Check Sheet Clarify the measurement objectives. Ask questions such as " What is the problem?", "Why should data be collected?", "Who will use the information being collected?", "Who will collect the data?" Create a form for collecting data. Determine the specific things that will be measured and write this down the left side of the check sheet. Determine the time or place being measured and white this across the top of the columns. Collect the data for the items being measured. Record each occurrence directly on the Check Sheet as it happens. Tally the data by totaling the number of occurrences for each category being measured.
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CAUSE AND EFFECT DIAGRAM (Fishbone Diagram) A Cause and Effect Diagram is an analysis tool to display possible causes of a specific problem or condition. A cause and effect diagram is used for: Identifying potential causes of a problem or issue in an orderly way Why has membership in the band decreased? Why isn't the phone being answered on time? Why is the production process suddenly producing so many defects? Summarizing major causes under four categories People, Machines, Methods, and Materials Policies, Procedures, People, and Plant or Places Surroundings, Suppliers, System, and Skills
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CAUSE AND EFFECT DIAGRAM (Fishbone Diagram) Steps in constructing a cause and effect diagram: 1. Prepare a flip chart or an overhead transparency of the following template:
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CAUSE AND EFFECT DIAGRAM (Fishbone Diagram) 1. Write the issue (problem or process condition) on the right side of the Cause and Effect Diagram. 2. Identify the major cause categories and write them in the four boxes on the Cause and Effect Diagram. You may summarize causes under categories such as: People, Machines, Methods, and Materials Policies, Procedures, People, and Plant or Places Surroundings, Suppliers, System, and Skills
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CAUSE AND EFFECT DIAGRAM (Fishbone Diagram) 1. Brainstorm potential causes of the problem. As possible causes are provided, decide as a group where to place them on the Cause and Effect Diagram. It is acceptable to list a possible cause under more than one
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This note was uploaded on 08/29/2011 for the course SEN 662 taught by Professor Jeffreys.appel,ph.d during the Spring '11 term at National.

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Statistical_Process_Control - Statistical Process Control...

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