Answer: Demographics
Explanation:
Demographics is defined as the analyzing and studying mechanism carried out on population of people in terms of statistics.It deals with the analyzing, structure, size, status and characteristics of people so that they can be divided into groups.
The factors on which demography divides the factors are age, sex, income, martial status, education, job, ethics etc.The notice and record about the characteristics changes that occur in group of people according with the time and situation such as aging , migration or other factor.