are the statistical measurements of populations and their qualities (such as age, race, gender, or income) over time.

Demographics

Explanation:

Demographics is used for defining traits of population which determines their statistics. Characteristics of communities belonging to the population are recorded and studied. Gender, incomes, occupation, race, education,ethics, background etc are factors used for creating demographic chart.

This statistical chart is used in survey of population for determining structure, migration, size , age, birth, death etc of the people belong to the studied population.