Median age definition geography
AgeDependency Ratio The ratio of persons in the ages defined as dependent (under 15 years and over 64 years) to persons in the ages defined as economically productive (1564 years) in a population. Age Structure The proportion of the total population in each age group.The term most in need of definition is, of course, population aging. Strictly speaking, aging is any shift in the populations age structure (the distribution of individuals, by age) that produces an increase in the median age (the age of the individual for whom one half of the population is younger). median age definition geography
The formula that calculates population change. The formula finds the increase (or decrease) in a population. The formula is found by doing births minus deaths plus (or minus) net migration. This is important because it helps to determine which stage in the demographic transition model a country is in.
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The process of change in a society's population from a condition of high crude birth and death rates and low rate of natural increase to a condition of low crude birth and death rates, low rate of natural increase, and a higher total population.
median relating to or constituting the middle value of an ordered set of values (or the average of the middle two in a set with an even number of values); the median value of 17, 20, and 36 is 20 ; the median income for the year was 15, 000
and one economic consequence countries face as their population ages in the future. Sample: 2A Score: 8 The response earned full credit and demonstrates a comprehensive understanding of aging populations, as well as the social and economic consequences of an aging population. Full credit (4 points) was earned in part A and part B (4 points).
Median age is the age that divides a population into two numerically equal groups that is, half the people are younger than this age and half are older. It is a single index that summarizes the age distribution of a population.
The most important demographic characteristic of a population is its agesex structure. Agesex pyramids (also known as population pyramids) graphically display this information to improve understanding and ease of comparison. The population pyramid sometimes has a distinctive pyramidlike shape when displaying a growing population.
Definitions Geography Web Atlas. A brief definition of various types of geography along with links to more indepth information, available data, maps and mapping tools. Terms& Concepts. Definitions of geographic terms& concepts used in demographic and housing data products. Hierarchy Diagrams
GCSE Population Glossary AgeSex Pyramid (Population Pyramid): a series of horizontal bars that illustrate the structure of a population. The horizontal bars represent different age categories, which are placed on either side of a central vertical axis.
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