Percentages: The most useful statistics ever invented

Since a percentage is simple to calculate (much simpler than, say, a standard deviation, the formula for which has 11 symbols!), you would think that it is also simple to interpret. ... of males in a population of 100 million males have IQ scores of over 200 and two percent of females in a population of 100 females have IQ scores of over 200. ................
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