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Probability (A mathematical masterpiece )

Probability (A mathematical masterpiece ). By: Fynn B. and Ethan K. What is Probability?. Probability is the likelihood of something happening. For example, if you flipped a coin, there would be a 1 in 2 chance that it lands face up or face down. This is called an even chance.

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Probability (A mathematical masterpiece )

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  1. Probability(A mathematical masterpiece ) By: Fynn B. and Ethan K.

  2. What is Probability? • Probability is the likelihood of something happening. • For example, if you flipped a coin, there would be a 1 in 2 chance that it lands face up or face down. This is called an even chance. • The opposite of this would be an extremely probable event, or an extremely improbable event.

  3. How does Probability Work? • When calculating probability you take the number of ways something can happen, and divide it by the number of possible outcomes. • For example, if you wanted to get heads on a coin by flipping it, you would say there is one way that can happen, (by getting heads on the coin). So, you divide 1 by 2 because there are two possible outcomes: you get heads, or you get tails. So you would get .5, which would mean you have a 50% chance to get heads or tails.

  4. Ideas about Probability • In probability, there are two main things you have to think about. If you took a coin and flipped it, the outcome would be completely random. But if you flipped, say, 100 coins the outcome would be more predictable.

  5. The Cooliest Activity #1 • What is the probability of answering 10/10 on a multiple choice test if you answered each question randomly? Each question has 4 answers. • Hint: you have a 1 in 4 chance to get 1 question right.

  6. Answer • There is a 1 in 1 048 576 chance. • There are 10 questions so multiply ¼ by 10. • You then have 1/40 which is 0.025. • You then put that to the power of ten. Which is equal to 1 048 576. • There is a 1 in 4 chance for each question, and the chance of you getting multiple questions right in a row goes down for the more questions you have. That’s why you must put 1/40 to the power of 10.

  7. Probability, A Kind of Estimating • Aristotle said, “The probable is what usually happens.” This is one of the key ideas when determining probability. • In probability, there isn’t a guaranteed way to find out if something is going to happen. It could be very likely or very unlikely, but that doesn’t mean anything for certain. That is, unless something is certain or is actually impossible, but questions like that are usually quite easy to spot.

  8. Probability in the Real World • People use probability in the real world all the time. Blackjack players use probability to predict what card is most likely next. • Stock brokers must think of the factors that affect the market, and what stock is most likely to rise. • And every time any of you guys say things to your friends like “bet you can’t eat an entire bag of jellybeans through your nose!” You think it’s quite probable that your friend won’t be able to do that.

  9. The Cooliest Activity #2 • Each person will flip their coin ten times. Record how many times it lands on one side and how many times it lands on the other. If it is a 50/50 chance, why don’t you always get the same number of each side?

  10. AMAZIIIIIING FACTS! (About probability) • Winning the lottery: 1 in 13 983 816 • Dying of a flesh eating disease: 1 in 1,000,000 • It is 400 more times likely you will die from a toilet than a shark • Odds of getting a hole in one 1 in 5000 • Odds of injury from shaving 1 in 6585 • Odds of drowning in a bathtub: 1 in 685,000 • Odds of being on plane with a drunken pilot: 1 in 117 • Odds of finding a four-leaf clover on first try: 1 in 10,000 • Odds of a meteor landing on your house: 1 in 182,138,880,000,000 • Chance of contracting the human version of mad cow disease: 1 in 40,000,000 • Chance of American man developing cancer in his lifetime: 1 in 2 • Chance of an American woman developing cancer in her lifetime: 1 in 3 • Odds of becoming president: 1 in 10,000,000 • Odds that a celebrity marriage will last a lifetime: 1 in 3

  11. Bibliography • http://www.funny2.com/odds.htm • http://www.mathsisfun.com/data/probability-events-independent.html • http://www.funtrivia.com/en/SciTech/Statistics-and-Probability-7615.html • http://www.ehow.com/list_7719506_real-life-probability-examples.html • http://www.stat.berkeley.edu/users/stark/SticiGui/Text/probabilityPhilosophy.htm

  12. The End! • We know you enjoyed the cooliest presentation you have ever received, and hoped you learned some stuff about probability, too.

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