Percentages: The most useful statistics ever invented

In order to avoid small numbers, they are usually reported “per thousand” rather than “per hundred” (which is what a simple percent is). For example, if in the year 2010 there were to be six million births in the United States “out of” a population of 300 million, the (“crude”) birth rate would be 6/300, or 2%, or 20 per thousand. ................
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