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Vocabulary
Probability and Odds
Sample Spaces and Tree Diagrams
The Counting Principle
Independent and Dependent Events
100

A list of all possible outcomes.

What is a sample space?

100
P(E)=(number of favorable outcomes)/(number of possible outcomes)
What is the equation for probability of an event?
100
Find the sample space of flipping two coins
What is heads heads, heads tails, tails heads, tails tails?
100
The number of outcomes for an even is found by multiplying the number of choices for each stage of the event.
What is the counting principle?
100
P(A, then B) = P(A) * P(B)
What is the equation for an independent event?
200

A way of showing a sample space and of finding the number of all possible outcomes.

What is a tree diagram?

200
(number of favorable outcomes)/(number of unfavorable outcomes)
What is the equation for the odds in favor of an event?
200
Draw a tree diagram for flipping two coins.
What is H H T T H T
200
Find the number of outfits that can be put together. 4 shoes, 5 pants, and 6 shirts
What is 120 outfits?
200
P(A, then B) = P(A) * P(B after A)
What is the equation for a dependent event?
300

The probability that one event occurs does not affect the probability of the other event occurring.

What is an independent event?

300
Find the probability of a blue token. 4 red, 5 blue, and 7 yellow
What is 5/16?
300
Find the number of outcomes of rolling two cubes.
What is 36?
300
A number 1-20 is chosen at random, then a letter A-Z is chosen at random. Find P(odd number, C or D).
What is 20/520 or 1/26?
300
4 tickets 2 red, 2 purple You replace the each ticket taken out. Find the probability of picking purple the 4th draw.
What is 1/2?
400

The probability of one event occurring affects the likelihood of the other event.

What is a dependent event?

400
Find the probability of getting red or white on a spinner with 2 red spaces, 1 white space and 1 blue space.
What is 3/4?
400
Make a tree diagram for flipping a coin and then rolling a cube.
What is What is 1 2 3 H 4 5 6 1 2 T 3 4 5 6
400
FREE SPACE
What is FREE SPACE
400
4 tickets 2 red, 2 purple You do not replace the first ticket. Find the probability of getting red after pulling out a red.
What is 1/3?
500

The ratio of the number of favorable outcomes to the number of unfavorable outcomes of an event.

What is the odds in favor of an event?

500
Find the odds of getting red or white on a spinner with 2 red spaces, 1 white space, and 1 blue space.
What is 3 to 1?
500
P(green, 2) Rolling a cube and spinning a spinner with 1 green, 1 red, and 1 blue.
What is 1/18?
500
You spin a spinner twice. 1 red, 1 blue, 1 yellow, 1 white Find P(red, red)
What is 1/16?
500
4 tickets 2 red, 2 purple You do not replace the first ticket. Find the probability of getting red and purple together when picking twice.
What is 2/3?