Experimental Probability

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Experimental Probability

  1. 1. Experimental Probability Tuesday, February 9, 2010
  2. 2. Vocabulary <ul><li>Experiment: an activity involving chance that can have different outcomes. </li></ul><ul><li>Outcome: the result of the experiment </li></ul><ul><li>Sample Space: all the possible results of the experiment </li></ul>
  3. 3. Identifying Sample Space & Outcomes <ul><li>Sample Space: heads, tails </li></ul><ul><li>Outcome: heads </li></ul>
  4. 4. Identifying Sample Space & Outcomes <ul><li>Sample Space: 1, 2, 3, 4, 5, 6 </li></ul><ul><li>Outcome: 6 </li></ul>
  5. 5. Finding Experimental Probability <ul><li>P(event) = (# of times event occurred)/(# of total trials) </li></ul>
  6. 6. Finding Experimental Probability <ul><li>Nikki flipped a coin 30 times and wanted to find the probability of the coin landing on heads. To the right is her frequency chart. </li></ul><ul><li>P(heads) = 18/30 or 3/5 </li></ul>12 18 Tails Heads
  7. 7. Comparing Experimental Probability <ul><li>Is the probability higher for the coin landing on heads or tails? </li></ul><ul><li>P(heads) = 18/30 or 3/5 </li></ul><ul><li>P(tails) = 12/30 or 2/5 </li></ul><ul><li>3/5 > 2/5, so the probability of landing on heads is higher than the probability of landing on tails. </li></ul>12 18 Tails Heads

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