Therefore, demography is the scientific study of human population primarily with respect to size, structure, distribution and change (development). It encompasses the study of the size, structure and distribution of thesepopulations, and spatial and/or temporal changes in them in response to birth, migration, aging and death. “Demographic transition refers to a population […] 3. Micro Demography: Micro demography is the narrow view of population studies. So the population remains stationary. Among others, Hauser and Duncan include the study of fertility, mortality, distribution, migration, etc. Papua New Guinea’s population growth rate from 2019 to 2020 was 1.95%. Population size, density, and distribution patterns describe a population at a fixed point in time. Demographic cycle. By 2100, the population will be at 19.78 million people. First stage (High Stationary): It is characterized by high birth rate and high death rate which cancel each other. It is the statistical study of population. DEMOGRAPHY 2. “Demography is the study of the size, territorial distribution, and composition of population, changes therein, and the components of such changes, which may be identified as natality, mortality, territorial movement (migration), and social mobility (change of status).” (Duncan & Hauser 1972) >>The study of population processes Formula: (([Population ages 0-15] + [Population ages 65-plus]) ÷ [Population ages 16-64]) × 100 NOTE: Dependency Ratio does not take into account labor force participation rates by age group. The health and healthcare needs of a population cannot be measured or met without knowledge of its size and characteristics. This lecture introduces students to some of the ways that our population, demographics, and growth rate is measured. Population pyramids are used to illustrate the differences in age and gender across the populations of different countries. Demography is the science of population. In short, demography is the scientific study of population. The word 'Demography' is derived from the two Greek words 'Demos' and 'Graphy'. 1. Demography 1. Demography is concerned with this essential ‘numbering of the people’ and with understanding population dynamics—how populations change in response to the interplay between fertility, mortality, and migration. Demography. The word Demos means people and Graphy mean to write or to study. A look back into the history shows that every nation passes through five stages of demographic cycle. of an individual, a family or group of a particular city or area or community. 2. Because of it, growth rate of population is also different. Demography is the statistical study of human population. By 2050, the population will be 14.2 million people. Along with the economic development, tendencies of birth-rate and death rate are different. Chile Urban Population Currently, 84.8 % of the population of Chile is urban (16,070,807 people in 2019) Thomas Malthus' example of population growth doubling was based on the preceding 25 years of the brand-new United States of America.Malthus felt that a young country with fertile soil like the U.S. would have one of the highest birth rates around. Population change results from interaction of demographic … The country’s fertility rate is 3.59 births per woman, which is relatively high and is far above the population … Human Population and Demographics Powerpoint Lecture . To study how a population changes over time, scientists must use the tools of demography: the statistical study of population changes over time. ADVERTISEMENTS: Theory of Demographic Transition is a theory that throws light on changes in birth rate and death rate and consequently on the growth-rate of population. India was in this stage till 1920. 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