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Is My Data Abnormal? Normality Tests and Transformations Live Webinar


Location: California, USA
From: 2021/05/12 10:30
To: 2021/04/13 12:00
Posted by: WCS Compliance

About this Event

Webinar Includes : All the training handouts , certificate ,Q/A and 90 mins Live Webinar

Training Overview

Many of the commonly used statistical tests and calculations of chart limits (or other measurements) require that the data be “normally distributed”. This webinar will show you how to check for normality in your data and apply transformations to non-normal data.

Learn the theory and concepts of determining when a normal distribution is needed, how to transform data that is not normal, and what to do when transformation does not work.

Why Should You Attend

The FDA requires that company to have “valid statistical techniques” are “suitable for their intended use”. Many statistical tests require that the distribution of the data used is normal. Assuming that the distribution of data is normal, without checking to see if indeed it is normal, will cause errors in test results.

Errors in results will cause bias of interpretation, rejection of lots that should be passed (or vice versa, passing lots that should be rejected), failing processes that are in specification (or vice versa…), and other problems. In essence, performing many statistical tests and other measurements without the basis of a normal distribution is garbage in, garbage out (GIGO).

In this webinar, you will also learn tools and concepts to understand what makes a distribution normal and when a transformation of data is, or is not, necessary.

Areas Covered
  • Regulatory Requirements
  • History of the Normal Distribution
  • The Normal Distribution in Mathematical and Visual Form.
  • To Transform or Not to Transform?
  • Tests to assess the degree of non-normality.
  • Evaluating normality visually.
  • When transformations can do more harm than good.
  • Other Options when Data is Not Normally Distributed
Key Learning Objectives
  • Understand when a test requires normal data
  • Test and visually inspect data for normality.
  • Learn when a transformation of data is needed, and how to transform data.
  • When the “Normality Assumption” can be “relaxed”.
  • Alternative tests and/or adjustments to use for non-normal data.
Who Will Benefit
  • QA/QC Supervisor
  • Process Engineer
  • Manufacturing Engineer
  • QA/QC Technician
  • Manufacturing Technician
  • R&D Engineer
  • Data Scientist
Elaine Eisenbeisz (30+ year Exp.)

Statistician. I develop solid statistical analysis plans and/or well-informed data analyses and reportings.

Greater Los Angeles Area

Elaine Eisenbeisz is a private practice statistician and owner of Omega Statistics, a statistical consulting firm based in Southern California. Elaine has over 30 years of experience in creating data and information solutions for industries ranging from governmental agencies and corporations, to start-up companies and individual researchers.

In addition to her technical expertise, Elaine possesses a talent for conveying statistical concepts and results in a way that people can intuitively understand



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