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What is the risk of 1 in a million?

Published in Probability and Statistics 1 min read

A 1 in a million risk means that there is a one in a million chance of something happening.

This is a very small risk, representing a 0.0001% probability. To put this into perspective:

  • Winning the lottery: The odds of winning the lottery are often much higher than 1 in a million.
  • Being struck by lightning: The chance of being struck by lightning in your lifetime is estimated to be around 1 in 15,300, significantly higher than 1 in a million.
  • Airplane accidents: While airplane accidents are rare, the risk of being involved in one is still considerably higher than 1 in a million.

Therefore, a risk of 1 in a million is considered extremely low. However, it's important to remember that even rare events can occur, and the perceived risk can vary depending on the context and individual circumstances.

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