Probability

Probability

1. MUTUALLY EXCLUSIVE EVENTS

   • Events that can't occur at the same time
   • The sum of the probabilities of mutally exclusive events is 1

2. EXPERIMENTAL DATA

   • What happens in an experiment
   • Repeating the experiment increases accuracy

3. Calculating probability

   • Number of ways something can happen / total number of possible outcomes
   • P(event happens) + P(event doesn't happen) = 1
   • P(event doesn't happen = 1-P(event happens)
   • P(event happens) = 1=P(event doesn't happen)

4. THEORETICAL PROBABILITY

   • What we expect to happen
   • Expected frequency = Probability x Number of trials

5. RELATIVE FREQUENCY

   • Frequency/number of times you tried the experiment
   • How often that an event occurs during an experiment

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