Introduction to levels of measurement.
Sorry for the AI voice. I have to make many of these, and audio production and captioning is the bottleneck.
Based on OpenStax Introductory Statistics by Barbara Illowsky, Susan Dean Access for free at https://openstax.org/books/introductory-statistics/pages/1-introduction
Material from Section 1.3: https://openstax.org/books/introductory-statistics/pages/1-3-frequency-frequency-tables-and-levels-of-measurement
You can find all my course materials at my github page: https://prof-sears.github.io