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Kindergarten · Statistics & Probability

Certain or impossible

Likelihood words describe chance: impossible, unlikely, likely, certain.

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  1. Certain: it must happen.
  2. Likely: more than half the outcomes.
  3. Unlikely: less than half the outcomes.
  4. Impossible: it cannot happen.

Worked example

4 red marbles: picking red
Every marble is red, so it must happen
Certain

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If there are no blue marbles, picking blue is impossible, not unlikely.

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