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Article

Spanish

ID: <

10670/1.zw5ygx

>

·

DOI: <

10.24201/edu.v4i02.1532

>

Where these data come from
The demographic significance of age and sex

Abstract

For children aged 15 years, twice as many as the orphans of mother are orphans of father. In the United States there are around two grandparents for each grandparent, and ten tatargrandparents for each tatargrandmother. In the United States, the proportion of people aged over 65 is four times that in Venezuela. How much is the difference due to Venezuela’s higher birth rates? What about higher mortality rates? The theory responding to this should also be able to show how a census or a sample showing only the percentage of the population under the age of 20 is sufficient to make a good estimate of their growth rate. The theory of stable populations serving these and other purposes was presented by the versatile Leonhard Euler in 1760, and just as many mathematical discoveries have found their main applications two centuries later. The recognition of instability and its mode of operation is much more recent — for example, in the United States the “babies boom” of the 1950s has a number of repercussions that could continue until the 21st century. One of the consequences of the abundance of children, or of any other similar fluctuation, is that during the upward phase young people aged 20-25 face a shortage of married men, and during the decline, a few years later, men cannot find suitable couples. The study of stable and then unstable populations will be the first task of this work.

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