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Planning and Control Results

24 December, 2015 - 09:26

The quality plan is produced during the initiation phase. The methods, procedures, and logic are described to demonstrate a commitment to a project of high quality. The plan identifies the products or services that will be measured and how they will be measured and compared to benchmarks. A flowchart demonstrates the logic and pathways to improve the plan.

During the execution phase, data are collected by measuring samples according to the design specified in the plan. The data are charted and analyzed. If variations are due to assignable causes, change requests are created.

KEY TAKEAWAYS

  • Statistical control terms that are commonly used are tolerance (the range between control limits), flowchart (a diagram showing decision branches and loops), benchmarking (comparison to best practices), fishbone diagram (shows possible causes of quality problems), check sheet (form used to record frequency of problem occurrences), histogram (column chart that shows frequency of problems), and Pareto chart (histogram sorted by frequency from highest to smallest with a line that shows total cumulative problems).
  • The quality planning process uses initial scope, budget, and schedule estimates to identify areas that need quality management.
  • Control of quality in repetitive processes use statistical control methods that involve designing testing while considering the cost of quality, taking measurements, and then analyzing the data using run charts that show control limits and trends. Methodologies are compared to the best practices by competitors, which is called benchmarking. Errors are documented using check sheets and analyzed using fishbone diagrams, histograms, or Pareto charts.
  • The products of planning and controlling quality are a quality management plan, data, analysis documents, and proposals for improvement.

EXERCISES

  1. The range from the mean to either control limit is the                   .
  2. A diagram that shows branches and loops based on decisions is a                                      . (two words)
  3. The best practices in an industry to which a company can compare its practices are called                   .
  4. What is the difference between a histogram and a Pareto chart?

Quality Management Plan

Consider a project in which you have been involved where there was a quality management plan or where such a plan was missing. Describe the effect of having or not having such a plan.