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Age distribution. The frequency of different ages or age groups in a given population. The distribution may refer to either how many or what proportion of the group.

Age distribution, also called Age Composition, in population studies, the proportionate numbers of persons in successive age categories in a given population. Age distributions differ among countries mainly because of differences in the levels and trends of fertility.

Age distribution, also called Age Composition, in population studies, the proportionate numbers of persons in successive age categories in a given population. Age distributions differ among countries mainly because of differences in the levels and trends of fertility.

Contrary to a common belief, the principal factor tending to change the age distribution of a population?and, hence, the general shape of the corresponding pyramid?is not the death or mortality rates, but rather the rate of fertility.

Age distribution indicates the composition of a population ing to age or the relationship of individual age groups to one another.

A population's growth rate is strongly influenced by the proportions of individuals of particular ages. With knowledge of this age structure, population growth can be more accurately predicted. Age structure data allow the rate of growth (or decline) to be associated with a population's level of economic development.

The age structure is closely related to the birth rate, death rate and migration of a population. In the region with high birth rate, the proportion of children tends to be higher, whereas in the region with low birth and death rate, the percentage of elderly population tends to be higher.

Age structure represents the number of people of different age groups. This is an important indicator of population composition, since a large size of population in the age group of 15-59 indicates a large working population.

Grouping by age This is easily done using the grouping feature built in to pivot tables. To group results by age, right-click any value in the Age field and choose Group from the menu.

Classifying age groups by generation is most appropriate for social media surveys....1. By Generation The Silent Generation: Born 1928-1945. Baby Boomers: Born 1946-1964. Generation X: Born 1965-1980. Millennials: Born 1981-1996. Generation Z: Born 1997-2012.