Geometric Probability
Venn Diagrams
Two-Way Tables
Probability Types
Mystery
100
What is the probability of landing in the shaded figure?
46/100 or 46%
100
What is the probability of picking a student that has only birds?
1/40 or 2.5%
100
What is the probability of choosing someone who is a night owl?
28/50 or 56%
100
This type of probability looks at one total in the margins of a two-way table
Marginal Probability
100
What is the probability of rolling a die and getting an even number?
3/6 or 1/2 or 50%
200
What is the probability of landing in shape 2?
24/99 or 24%
200
What is the probability of picking a student that has birds?
15/40 or 37.5%
200
What is the probability of choosing someone who is under the age of 30 and an early bird?
11/50 or 22%
200
This type of probability restricts the sample size, making the denominator smaller.
Conditional Probability
200
Ms. Kuropas has a bag of rubber duckies. Do not ask why. 3 of the rubber duckies are blue, 2 are red, and 5 are yellow. What is the probability of picking a red duck?
2/10 or 20%
300
What's the probability of landing in shape 1 or 2?
39/99 or 39%
300
What is the probability of picking a student that has birds and dogs?
4/40 or 10%
300
What is the probability of choosing someone who is 30 or older and is a night owl?
16/50 or 32%
300
Be careful not to double count when looking at this kind of probability!
Union (or problems)
300
What is the probability of drawing a queen in a standard deck of cards?
4/52 or 1/13 or 7.7%
400
What is the probability of landing in the green square?
1/4 or 25%
400
What is the probability of picking a student that has dogs or cats?
39/40 or 97.5%
400
What is the probability of choosing someone who is under 30 or is an early bird?
34/50 or 68%
400
This kind of probability looks at the overlap between two or more categories
Intersection or Joint (And problems)
400
What is the probability of picking a 7 given it is a club?
1/13 or 7.7%
500
What is the probability of landing in the shaded area?
13.73/64 or 21.5%
500
What is the probability of picking a student that has dogs given that they have cats?
8/28 or 28.6%
500
Given someone is a night owl, what is the probability they are under the age of 30?
12/28 or 43%
500
This looks at the chances of landing within a specific area
Geometric probability
500
What is the probability of landing in one of the squares? Find the percentage to the nearest hundredth
9.82%