A Problem in Age-Distribution

摘要: The age-distribution in a population is more or less variable. Its possible fluctuations are not, however, unlimited. Certain age-distributions will practically never occur; and even if we were by arbitrary interference to impress some extremely unusual form upon the of an isolated population, time “irregularities” would no doubt become smoothed over. It seems therefore that there must be limiting “stable” type about which actual distribution varies, towards it tends return through any agency disturbed therefrom. was shown on former occasion1 how calculate “fixed” age-distribution, which, once established, (under constant conditions) maintain itself.