This page defines the four types of measurement scales: nominal, ordinal, interval, and ratio. Site maintained by the University of Illinois at Springfield.

Types of scales and levels of measurement as well as variables to measurement are covered in these lecture notes from Portland State University.

This course handout on measurement scales is maintained by Carl James Schwarz, Simon Fraser University, British Columbia, Canada.

These lecture notes on scales of measurement include a general overview, basic principles, examples and more. Site maintained by Dr. Lee Baker, the University of Colorado at Colorado Springs.

Read a brief overview of measurement scales with links to more information on relevant terms. HyperStat Online is hosted online by author David M. Lane, Associate Professor, Departments of Psychology and Statistics, Rice University.

Scroll to the middle of this page (to chapter nine) for detailed lecture notes on measurement. Site maintained by Florida Gulf Coast University.

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