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Probability. Jennifer Farist. Table of Contents. Definitions Important terms Uses in real life Probability of eye color Chances vs. odds What are the chances? What are the odds? How do we get these numbers? Websites to learn more. Definition: Probability is…. The study of chance
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Probability Jennifer Farist
Table of Contents • Definitions • Important terms • Uses in real life Probability of eye color • Chances vs. odds What are the chances? What are the odds? How do we get these numbers? • Websites to learn more
Definition:Probability is… • The study of chance • The likelihood that a given event will occur • a measure of how likely it is that some event will occur
Likely Unlikely Chance Perhaps Outcome Probably Possible Impossible Maybe Odds Important terms
Uses in real life • Weather reports • Medical findings • Political doings • State lotteries- Funny video
http://museum.thetech.org/ugenetics/eyeCalc/eyecalculator.htmlhttp://museum.thetech.org/ugenetics/eyeCalc/eyecalculator.html What color eyes will your children have?
Chances vs. odds One way to describe the chance of an event’s occurring is by using odds. • The odds in favor of an outcome is the ratio of the number of ways the outcome can occur to the number of ways the outcome cannot occur. Finding Odds in favor number of successes : number of failures the Odds • The odds against an outcome is the ratio of the number of ways the outcome cannot occur to the number of ways the outcome can occur. Odds against number of failures : number of successes
Explanation of odds • Becoming the president of the United States 10,000,000 :1 Ten million people do not become president For every one person who becomes president
What are the chances? • Chance of getting the flu this year: 1 in 10 • Chance of dying from a shark attack: 1 in 300,000,000 • Chance of an American home having at least one container of ice cream in the freezer: 9 in 10.
Explanation of chances Chances of randomly choosing a vowel from the alphabet 5 vowels- a,e,i,o,u 26 letters in all
Fractions Decimals Ratios How do we get these numbers?
Web sites to explore to learn more • http://www.webmath.com/lottery.html • http://nces.ed.gov/nceskids/chances/ • http://www.brainpop.com/math/dataanalysisandprobability/basicprobability/ • http://pbskids.org/cyberchase/games/probability/index.html • http://www.betweenwaters.com/probab/probab.html • http://mathforum.org/dr.math/faq/faq.prob.world.html