1. Name ___________________________________ Date ______________________
Mrs. Labuski & Mrs. Rooney Period _______ 11-2 Experimental Probability
VOCABULARY DEFINITION EXAMPLE
An actvitity
involving chance Flipping a coin
EXPERIMENT
that can have Rolling a die
different results.
Flipping a coin:
The different
Heads or tails
results that can
OUTCOME
occur in an
Rolling a die:
experiment
1,2,3,4,5,6
Flipping a coin:
The set of all
{Heads or tails}
possible outcomes.
SAMPLE SPACE
You can use { } to
Rolling a die:
show sample spaces
{1,2,3,4,5,6}
The ratio of the Flipped a coin
number of times 4 times
the event occurs to Heads landed
EXPERIMENTAL
the total number of 3 times
PROBABILITY
times the
Probability ≈ ¾
experiment is
performed

2. For each experiment, identify the outcome shown and the sample space.
outcome: red outcome: yellow
sample space: {red, blue} sample space: {red, blue, yellow}
Kerry has a bag of marbles. He removed one marble, recorded the color, and placed
it back in the bag. He repeated this process 15 times and recorded his results in the
frequency table.
Color Selected Red Blue Black Green
Frequency 3 1 5 6
3. Find the experimental probability that a marble selected from the bag will be
blue. 1
15
4. Find the experimental probability that a marble selected from the bag will be
black. 5 = 1
15 3
5. Based on Kerry’s experiment, which color marble is he most likely to select from
the bag? green
6. Based on Kerry’s experiment, which color marble is he least likely to select from
the bag? blue
7. In 10 free throws, Pamela made 3 shots. What is the experimental probability that
Pamela will make her next free throw? 3 = 30%
10
8. Juan tossed a fair coin and it landed heads up. What is the outcome and sample
space of this experiment? outcome: heads
sample space: {heads, tails}

3. For each experiment, identify the outcome shown and the sample space.
outcome: green outcome: 2
sample space: {red, blue, green} sample space: {1,2,3,4,5}
Amanda has a standard deck of playing cards. She picked one card, recorded
the suit, and placed it back in the deck. She repeated this process several times
and recorded her results in the table.
3. Find the experimental probability that a card 5
selected from the deck will be a spade. 24
4. Find the experimental probability that a card 4 =1
selected from the deck will be a diamond. 24 6
5. Based on Amanda’s experiment, which card suit is she most likely to select from
the deck? club
6. Based on Amanda’s experiment, which card suit is she least likely to select from
the deck? diamond
7. In 28 coin tosses, John got tails up 14 times. What is the experimental probability
that John will make get tails up on his next toss? 14 = 1 = 50%
28 2

4. Name ___________________________________ Date ______________________
Mrs. Labuski & Mrs. Rooney Period _______ 11-2 Experimental Probability
VOCABULARY DEFINITION EXAMPLE
EXPERIMENT
Flipping a coin:
OUTCOME
Rolling a die:
Flipping a coin:
SAMPLE SPACE
Rolling a die:
Flipped a coin
4 times
EXPERIMENTAL Heads landed
PROBABILITY 3 times
Probability ≈
For each experiment, identify the outcome shown and the sample space.

5. outcome: _______________________ outcome: ______________________
sample space: ____________________ sample space: ___________________
Kerry has a bag of marbles. He removed one marble, recorded the color, and placed
it back in the bag. He repeated this process 15 times and recorded his results in the
frequency table.
Color Selected Red Blue Black Green
Frequency 3 1 5 6
3. Find the experimental probability that a marble selected from the bag will be
blue. __________________________________________________________
4. Find the experimental probability that a marble selected from the bag will be
black. __________________________________________________________
5. Based on Kerry’s experiment, which color marble is he most likely to select from
the bag? __________________________________________________________
6. Based on Kerry’s experiment, which color marble is he least likely to select from
the bag? __________________________________________________________
7. In 10 free throws, Pamela made 3 shots. What is the experimental probability that
Pamela will make her next free throw? ____________________________________
8. Juan tossed a fair coin and it landed heads up. What is the outcome and sample
space of this experiment? outcome: _______________________
sample space: ____________________
For each experiment, identify the outcome shown and the sample space.

6. outcome: _______________________ outcome: ______________________
sample space: ____________________ sample space: ___________________
Amanda has a standard deck of playing cards. She picked one card, recorded
the suit, and placed it back in the deck. She repeated this process several times
and recorded her results in the table.
3. Find the experimental probability that a card selected from the deck will be a
spade. _________________________________________________________
4. Find the experimental probability that a card selected from the deck will be a
diamond. _________________________________________________________
5. Based on Amanda’s experiment, which card suit is she most likely to select from
the deck? _________________________________________________________
6. Based on Amanda’s experiment, which card suit is she least likely to select from
the deck? _________________________________________________________
7. In 28 coin tosses, John got tails up 14 times. What is the experimental probability
that John will make get tails up on his next toss? ___________________________