Other
Stat Soft: Getting Started With Statistics Concepts
Definitions of the basic concepts in statistics. Great for review and discussion or for introduction into topics.
University of Baltimore
University of Baltimore: Types of Data, Levels of Measurement
This resource provides a discussion about the many types of statistical data and the many levels of statistical measurement. Written by Dr. Hossein Arsham
Curated OER
Measurement Scales
A good discussion about the many types of statistical data and the many levels of statistical measurement. Complete with a diagram for those who need to "see" what's being explained.