The phrase "age pyramid" is correct and usable in written English.
It is typically used to describe a graphical representation of the age distribution of a population, often in the shape of a pyramid.
Example: "The age pyramid of the country shows a significant increase in the elderly population over the past decade."
Alternatives: "population pyramid" or "demographic pyramid".
America has a graying population, with a demographic profile that turns advertisers' ideal age pyramid upside down.
The United States and some other countries have long turned immigration into a public policy that, despite some stumbling blocks, has helped preserve a balanced age pyramid.
In Japan and Europe, populations are ageing from the middle of the age pyramid, which presents a major challenge for pension and health systems.
However, developing countries are mainly ageing from the base of the age pyramid, which creates an opportunity rather than a problem.In populations where there are lots of children and relatively few people of working age the classic age pyramid with a broad base of children economies can get caught in a trap of rapid population growth and slow economic growth.
France and Britain will have a much more favourable age pyramid, with more than two workers per pensioner.All this is a world away from the other rich country with demographic growth: America.
"As we seek to resume commercial whaling, it is crucial to get information as to whales' migration, reproductive rates and the age pyramid of the population for setting catch quotas," the official said, adding that killing the animals was the only way to obtain "essential information".
As a consequence, the age pyramids of both societies were skewed; in Africa children predominated, in much of the New World people over age 15.
We also provide justification for the use of rates, detailed age pyramids, and refined temporal scales in visual analytics.
A comparison of age pyramids for the countries under study in 2002 and 2052 is presented in Fig. 1.
News of the offer has spread via E-mail, in a sort of digital-age pyramid scheme: If you get a friend to sign up, you get another share.
Similar to many other developing regions, the age structure pyramid of the population in Golestan is highly broad-based, with a large proportion of young people.
