Final answer:
Demographics describe the statistical qualities or characteristics of a given population, which include studies of birth rates, death rates, and life expectancies.
Step-by-step explanation:
Demographics describe the statistical qualities or characteristics of a given population. This includes the study of population dynamics such as birth rates, death rates, and life expectancies. By collecting and analyzing these data, scientists and demographers can understand population changes over time and make predictions about future trends. Vital statistics registries and censuses are key sources of demographic data, tracking a wide range of factors, including age, sex, marital status, and educational levels, that influence population dynamics.