Which of the following factors is NOT considered a demographic parameter?

Demographic parameters are quantifiable characteristics of a population and typically include factors that can be used to describe or classify individuals within that population. Age, level of education, and nationality are all demographic parameters because they provide specific, measurable information about individuals that can influence social dynamics, health outcomes, and other research variables.

Hobbies, however, do not fall into the category of demographic parameters because they are not inherently quantifiable characteristics of a population or society. Instead, hobbies are related to individual preferences and interests rather than defining characteristics used to classify a group demographically. As such, they do not serve the same purpose as age, education level, or nationality in providing a statistical framework for analyzing population data.