Percentages: The most useful statistics ever invented

The odds in favor of getting a spade are 25 divided by (100 – 25), or “1 in 3”; the odds against it are (100 – 25) divided by 25, or “3 to 1”. [In his book, Probabilities and life , the French mathematician Emile Borel (1962) claims that we act as though events with very small probabilities never occur. ................
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