This document provides examples of calculating probabilities of different events. It begins by defining key probability terms like event, outcome, and experiment. Examples then calculate probabilities of tossing coins, dice, drawing cards, and selecting marbles from bags. Questions at the end ask about how probability is used to find the likelihood of an event and in everyday life.

1. Spiral Review – Do Now
1. Write each ratio in
simplest form: Vocabulary
a. b.  Probability
 Experiment
 Outcome
 Event

2. P(event)=
Objective:
To find the probability of an event.

3. Probability
P(event)=
1. P(Heads)=
2. P(Tails)=
What if I tossed the coin ten times?
Would that change the results?
Does it matter how many times you
toss the coin?

4. Event: tossing a die
Die: How many possible outcomes?
What is the probability of
tossing a 4?
What is the probability of
tossing a number less than
3?
What is the probability of
tossing an odd number?
,

5. Dice

6.  When tossing two dice what is the probability
of getting

7. Hokie Pokie
1. What is the probability of
landing on red?
2. What is the probability of
landing on blue?
3. What is the probability of
landing on your right hand?
4. What is the probability of
landing on your left or right
foot?

8. Practice
How many cards are in a
standard deck of playing cards?

9. Deck
 What is the probability of
drawing a red card?
of
 What is the probability of
drawing a royalty card?
 What is the probability of
drawing a red or black
card?
Cards
 What is the probability of
drawing a green card?

10. Probability
Marbles

11.  Mrs. Weir has a bag of  Mrs. Diehl has a bag of
marbles. It has 14 red, marbles. Her bag has
16 green and 12 blue. 6 cat’s eyes, 4 tiger’s
What is the eye, and 12 yellow
probability of you marbles. What is the
choosing a red probability of you
marble? drawing a cat’s eye?

12. 1. How do you find
the probability of
an event?
2. How do people
use probability in
their everyday
lives?