Understanding Variation


This courses is a primer in the statistics used for SPC (Statistical Process Control); topics covered include building and using a histogram to understand variation, patterns of variation, measures of variation (mean, range, standard deviation), the normal curve and process stability. Both graphical and mathematical techniques of measuring variation are covered. This course is a targeted training course and provides focused training

System requirements include:

  • Operating system: Windows XP, Windows Vista or Windows-7 through Windows 10, Mac OS X 10.5 or later
  • Browser: IE-6 or higher, Firefox, Google Chrome, Safari Most recent versions of all.
  • Audio capability including speakers or headphone is required.

Course Outline

  • Lesson 1: Introduction to Variation
  • Lesson 2: Measuring Variation
  • Lesson 3: Patterns of Variation
  • Lesson 4: Measures of Variation
  • Lesson 5: The Normal Curve
  • Lesson 6: Stability


 Upon completion of this eLearning, you will be able to:

  • Explain what variation in a work process is and why it is bad.
  • Describe key techniques for measuring variation – visual display and mathematical.
  • Identify key patterns of variation and explain what causes them.

Target Audience

  • Quality professionals
  • Supervisors
  • Managers
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Time Requirement


Web-Based 2 hours $34.50

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