Variables, a Short Taxonomy

  • Shapoor ValiEmail author
Part of the Mathematics Textbooks for Science and Engineering book series (MTSE, volume 3)


A phenomenon that changes over time, space, objects, or living things is called a variable. If a variable’s changes could be measured, that is, expressed by numbers or quantities, then we have a quantitative variable; otherwise, we have a qualitative variable. Blood pressure is an example of a quantitative variable—because it takes different values from individual (living thing) to individual. It can be measured, and has its own scale of measurement.


Gross Domestic Product Unemployment Rate Assembly Line Qualitative Variable Irrational Number 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Atlantis Press and the authors 2014

Authors and Affiliations

  1. 1.Department of EconomicsFordham UniversityNew YorkUSA

Personalised recommendations