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Write the probability scale.

Mathematics

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  1. Write the probability scale.

    The probability scale ranges from 0 (impossible) to 1 (certain). It can be described using words:

    Impossible→Unlikely→Even Chance→Likely→Certain\text{Impossible} \rightarrow \text{Unlikely} \rightarrow \text{Even Chance} \rightarrow \text{Likely} \rightarrow \text{Certain}

    Numerically, this corresponds to:

    0→between 0 and 0.5→0.5→between 0.5 and 1→10 \rightarrow \text{between } 0 \text{ and } 0.5 \rightarrow 0.5 \rightarrow \text{between } 0.5 \text{ and } 1 \rightarrow 1

    The probability scale from impossible to certain is:

    Impossible→Unlikely→Even Chance→Likely→Certain\boxed{\text{Impossible} \rightarrow \text{Unlikely} \rightarrow \text{Even Chance} \rightarrow \text{Likely} \rightarrow \text{Certain}}
  2. Give an example of an impossible event.

    An impossible event is one that cannot happen.
    Example: Rolling a 7 on a standard six-sided die.

  3. Give an example of a certain event.

    A certain event is one that will definitely happen.
    Example: The sun rising tomorrow.

  4. Give an example of an event that might happen.

    An event that might happen has a probability between 0 and 1.
    Example: Flipping a coin and getting heads.

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