
Note how the probabilities are given in Example 3. Instead of using a fraction, decimal, or percent, the annual risk of being killed in a plane crash is given as "about 1 in 11 million." This is a convenient way of writing a probability that some may find easier to understand than the other ways. For instance, consider these other ways of writing the probability 1 in 11 million.
 Fraction:
 Decimal: 0.000000091
 Percent: 0.0000091%

Understanding the risks involved with riding and operating a motorcycle is a key component to motorcycle safety. To learn more about motorcycle laws, training, safety and risks, visit the Motorcycle Safety Foundation.

Per 100 million passenger miles, there are about 31 motorcycle deaths, 2 plane deaths, 1.5 train deaths, and 1.5 automobile deaths. So, for the same number of miles traveled, the risk of death while riding a motorcycle is about times worse than the risk while flying in a plane and about times worse than the risk while riding in a train or automobile. For the same number of miles traveled, the risk of death while flying is about times worse than the risk while riding in a train or automobile. Travel by train and automobile have the same risk of death.
There are 2 deaths for every 100 million airplane miles flown. So, the risk of death from taking a 2000mile plane flight is
or 0.004%. It is true that the more you fly, the more you increase the likelihood of an accident. Flying carries a certain risk of an accident. So, by flying multiple times, you take that risk over and over, increasing your overall likelihood of an accident.

Comments (1)
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When posting a comment, you agree to our Terms of Use.Showing 1 commentsRon Larson (author)1 decade ago I like David Ropeik's book "A Practical Guide for Deciding What’s Really Safe and What’s Really Dangerous in the World Around You". It does a good job in helping people understand the probabilities of risk.1 1