Which of the following is not considered a demographic variable?

Diversity is not considered a demographic variable, as it refers more to the composition and characteristics of a population rather than specific measurable factors typically used in demographic analysis. Demographic variables are quantifiable attributes that are used to study the structure and dynamics of populations, including fertility, mortality, and migration.

Fertility refers to the birth rates within a population, which provides insight into population growth and decline. Mortality relates to death rates and helps in understanding life expectancy and health conditions of a population. Migration encompasses the movement of people from one place to another, influencing population changes by increasing or decreasing the number of people in a specific area.

In contrast, diversity concerns itself with the variety within a population, such as ethnic, cultural, or social characteristics, and does not provide a measure of change or structure typical of the other demographic variables. This distinction highlights why diversity is not classified alongside fertility, mortality, and migration as a demographic variable.