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Rainer and Matthew's 2nd Unproject

Page history last edited by PBworks 16 years, 9 months ago

 DO THE QUIZ HERE 

 

 

 

 

 


DEFINITIONS


 Probability - is the measure of the likelihood of an event. Probability is shown using a fraction or a percent.

    • e.g. What is the likelihood of rain in the Safara desert? 1/5 or 20%
    • e.g. What is the likelihood of snowing on January 5 in Winnipeg? 3/5 or 60%

 

Possible Outcome - is a possible result of an experiment.

Event - is any possible outcome of an experiment.

    • e.g. You roll a 6-sided die. An outcome could be a 1.

 

Total Possible Outcomes - is the total possible results of an experiment.

    • e.g. You roll a 6-sided die. TPO are 1, 2, 3, 4, 5 and 6.

 

Independent Event - is an event whose outcome do not influence each other.

    • e.g. You roll a 6-sided die. Getting a 1 doesn't influence getting a 2.

 

Theoretical Probability - is what should happen during an experiment

    • e.g. You flip a coin 100 times. Heads should come up 50 times and tails should come up 50 times.

 

Experimental Probability - is the number of times an event/outcome occurs during an experiment.

    • e.g. During an experiment heads comes up more than tails.

 

 


 SOLVING QUESTIONS


This is how i would answer a question involving probability.

 

Answer the question with this:

  P = Probability

 

So you just put the number of outcome you want to get in the top and the total outcome that you cen get in the bottom.

e.g. What is the probability of you getting heads when you flip a coin?

       1/2

       1=PO(possible outcome)

       2=TPO(total possible outcome)

 

Now you have to turn your answer into a percent. Just divide the numerator(top number) by the denominator(bottom number) and times it by 100.

Numerator / Denominator x 100 = Percent

 

For more information on percent go Percent.

 

 


 QUESTIONS


 A jar contains 25 purple, 17 brown, 23 red and 16 violet marbles. A marble is drawn at random. What is the probability of purple, violet or brown?

 

First find all the possible outcomes that you want:

Purple-- 25

Violet--- 16

Brown-- 17

PO------ 58

 

Second find the the total possible outcomes:

Purple-- 25

Brown-- 17

Red----- 23

Violet--- 16

TPO----- 81

 

Now you have 58/81

You are not done yet!

You still have to convert into percent:

58 / 81 = 0.7160 x 100 = 71.6%

 

P(purple, violet or brown) 58/81 or 71.6%

 

Questions:

 

  1. Probability of getting even numbers when rolling a 6-sided die.
  2. Probability of getting a number less than 5 when rolling a 6-sided die.
  3. Probability of getting tails when flipping a coin.

 

Answers: highlight

 

  1. 2/6 = 1/2 = 50%
  2. 4/6 = 2/3 = 66.66%
  3. 1/2 = 50%

 

 


 LINKS


 Probability Blog posts - Sargent Park Math Zone

 

 


 ?!?!?


 

What are the odds of this happening?

 

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 BIBLIOGRAPHY


 

Title made in

 

Infromation taken from

  • "Probability Big Sheet of Paper"
  • Class Notes

 

Questions taken from

  • Probability Test
  • Class Notes

 

Videos taken from

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