Sample Size Determination for Design Validation Activities

Duration 90 Mins
Level Basic & Intermediate
Webinar ID IQW20E0506

  • Populations, Samples, Data Types, and Basic Statistics
  • Common Elements of Sample Size Determination
  • Design Validation Applications
  • Sample Sizes for Reliability Demonstration (Pass/Fail Outcomes)
  • Sample Sizes for Reliability Estimation
  • Sample Sizes for Estimating Proportion Failing (Pass/Fail Test Outcomes)
  • Sample Sizes for Acceptance Sampling / Lot Disposition
  • Other Common Sample Size Applications (Hypothesis Testing, Equivalence Testing)

Overview of the webinar

Design Validation should ensure that product performance, quality, and reliability requirements are met.  In order to have high confidence that products will perform as intended, enough data must be collected and analyzed using various statistical methods. Selecting appropriate sample sizes often vexes many practitioners. Testing only a few units does not provide a high level of confidence that performance requirements will be consistently met. Testing too many units may be unnecessarily expensive and can lead to misleading conclusions. 

This webinar discusses many issues present in any sample size determination. The webinar also discusses several common applications that require an appropriate sample size determination including Reliability Demonstration/Estimation, Estimating proportions, Acceptance Sampling for Lot Disposition, and Hypothesis Testing. Numerous examples are provided to illustrate the key concepts and applications

Who should attend?

  • Quality Personnel
  • Product Design/Development personnel
  • Manufacturing Personnel
  • Operations / Production Managers
  • Production Supervisors
  • Supplier Quality personnel
  • Quality Engineering
  • Quality Assurance Managers, Engineers
  • Process or Manufacturing Engineers or Managers

Why should you attend?

Sample sizes have a significant impact on the uncertainty in estimates of key process performance characteristics.  To have high confidence in results, sufficient sample sizes must be used. Potential problems should be uncovered during Design Validation, prior to launching a product. Failure to do so may result in customer dissatisfaction, excessive warranty, costly recalls, or litigation. 

Participants in the webinar will be able to understand the impact of sample sizes on the results from various statistical analysis methods commonly used during Design Validation. 

Faculty - Mr.Steven Wachs

Steven Wachs has 25 years of wide-ranging industry experience in both technical and management positions. Steve has worked as a statistician at Ford Motor Company where he has extensive experience in the development of statistical models, reliability analysis, designed experimentation, and statistical process control.  
Steve is currently a Principal Statistician at Integral Concepts, Inc. where he assists manufacturers in the application of statistical methods to reduce variation and improve quality and productivity. He also possesses expertise in the application of reliability methods to achieve robust and reliable products as well as to estimate and reduce warranty. In addition to providing consulting services, Steve regularly conducts workshops in industrial statistical methods for companies worldwide.
M.A., Applied Statistics, University of Michigan, 2002
M.B.A, Katz Graduate School of Business, University of Pittsburgh, 1992
B.S., Mechanical Engineering, University of Michigan, 1986

05-01-2020 - Form Sample Size Determination for Design Validation Activities.pdf


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