How Large A Sample Do I Need?

(Webinar length:  1hr 23min)


Sampling is an essential element of process and product development as well as control of manufacturing processes. The decision is made to sample a process, vessel or incoming material to make decisions regarding the sampled material immediately raises the question “How Large a Sample Do I Need?”

This webinar provides some practical and useful answers to this question.  Methods for determining appropriate sample sizes in raw materials acceptance, finished product release, process and product development experimentation and process monitoring for process stability and capability is discussed. A comparison is made of the square root (n)+1 sampling rule with the ANSI Z1.4 sampling system for process monitoring including incoming raw materials, in-process manufacturing and finished product. The value of a systems approach to sampling and practical tips, traps and guideline for sampling is discussed. The presentation includes portable methods for making power calculations for experimental design. The concepts and methods involved are introduced and illustrated with case studies and examples.

 What you will learn:

  • Principles for developing useful sampling plans and procedures
  • When “Square Root (n)+1” is a valid sampling plan
  • Creating a process sampling system using ANSI Z1.4 Sampling Plans
  • Sampling plans for monitoring process stability and capability
  • Practical power calculation procedures for determining appropriate experiment size
  • Plans for sampling tanks and blenders
  • How to use sampling data to get early warning of impending process problems
  • Tips, traps and guidelines for developing successful sampling plans

Who will benefit from this webinar:

  • Executives
  • Department Managers
  • Quality Engineers
  • Research and Development Scientists
  • Biologists and Microbiologists
  • Process and Manufacturing Engineers
  • Quality Assurance Personnel
  • Supply Chain Professionals
  • Accounting Professionals

Presenter--Ronald D. Snee, PhD

Ron Snee is Founder and President of Snee Associates, a firm dedicated to the successful implementation of process and organizational improvement initiatives. He provides guidance to senior executives in their pursuit of improved business performance using Quality by Design (QbD), Lean Six Sigma and other improvement approaches that produce bottom line results. Prior to his consulting career he spent 24 years at the DuPont Company in a variety of assignments including pharmaceuticals. His clients include a wide variety of pharmaceutical and food companies. He has been developing and applying sampling, statistical quality control, process monitoring and strategy of experimentation methodologies for more than 30 years. His recent application and research on QbD has produced more than ten articles on use of QbD. He has coauthored 2 books on the methods and tools of process monitoring, improvement and development and speaks regularly at conferences and meetings on these subjects. He also serves as an Adjunct Professor at Temple University School of Pharmacy and Rutgers University Pharmaceutical Engineering program.

Ron received his BA from Washington and Jefferson College and MS and PhD degrees from Rutgers University.  He is an academician in the International Academy for Quality and Fellow of the American Society of Quality, American Statistical Association, and American Association for the Advancement of Science.  He has been awarded ASQ’s Shewhart and Grant Medals, and ASA’s Deming Lecture and W. J. Dixon Consulting Awards as well as numerous other awards and honors.  He is a frequent speaker and has published 5 books and more than 245 papers in the fields of performance improvement, quality, management, and statistics. He is a past recipient of the Institute of Validation Technology Speaker of the Year Award.

  • Item #: 0218eSample
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Price $289.00