Transcript Vocabulary Experimental Probability

Pre-Algebra
Experimental Probability
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Let’s Experiment!!
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Pretend that you have a
number cube.
You are going to roll it
one time.
What is the theoretical
probability of getting
each number?
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P(1)
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P(2)
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P(3)
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P(4)
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P(5)
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P(6)
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Let’s Experiment!
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You are going to conduct a probability experiment!
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You are going to toss a dice 30 times.
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Record the number of times each number appears!!
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Based on the results of your experiment, find
the experimental probability of each event.

P(1)
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P(2)
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P(3)
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P(4)
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P(5)
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P(6)
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Answer me this!!

How did you find the experimental probability?
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In your own words, what is experimental probability?

What is the difference between theoretical and
experimental probability?
5
What Are You Learning?
I
CAN find the
experimental
probability.
6
Why Do You Need To Know This?
Experimental
Probability is
useful in finding the number
of outcomes for various real
life experiments.
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There are cards numbered 1-10 in a bag. You pick one card at
random. Find the theoretical probability of each event.
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P(1)
P(2)
P(3)
P(4)
P(5)
P(6)
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P(7)
P(8)
P(9)
P(10)
P(even #s)
P(odd #s)
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Let’s Experiment!!

Each group has a baggie with the numbers 1-10
inside.
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One member of the group needs to pick a
number, record the number, and replace the
number in the bag.
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This needs to be done 20 times. Be sure to
record your results after each pick.
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Based on the results of your experiment, find
the experimental probability of each event.






P(1)
P(2)
P(3)
P(4)
P(5)
P(6)
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P(7)
P(8)
P(9)
P(10)
P(even #s)
P(odd #s)
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Answer me this!!

How did you find the experimental probability?

In your own words, what is experimental
probability?

What is the difference between theoretical and
experimental probability?
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Vocabulary
Experimental Probability—
number of times an event occurs
number of times experiment is done
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Two number cubes are rolled 75 times and a
sum of 9 is rolled 10 times.

What is the experimental probability of rolling a
sum of 9?
P(9) = # of times a sum of 9 occurs
# of possible outcomes
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That’s My Favorite Color!!
A
spinner is spun 50 times and it
lands on the color blue 15 times.
 What
the experimental probability
of spinning blue?
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The graph shows the results of an experiment in
which a coin was tossed 30 times.
 What
is the
experimental
and theoretical
probability of
tossing tails?
You Call It!
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16
14
12
Number of 10
Tosses 8
6
4
2
0
Heads
Tails
Coin Faces
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The graph shows the results of an experiment in
which a number is rolled 30 times.
 What
is the
experimental
and theoretical
probability of
rolling a 5?
# of Rolls
8
7
6
Number of 5
4
Rolls 3
2
1
0
1
2
3
4
5
6
Number
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In a survey, 100 people were asked to name
their favorite Independence Day side dishes.
 What
is the
experimental
probability of
macaroni salad
being someone’s
favorite dish?
Side Dish
# of people
Potato Salad 55
Green salad 25
or vegetables
Macaroni
12
Salad
Coleslaw
8
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In a survey, 50 people were asked to pick
which movie they would see this weekend.
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20 chose Horror Story
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15 chose The Ink Well
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10 chose The Monkey
House
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5 chose Little Rabbit.
 What
is the
experimental
probability of
someone wanting
to see The Monkey
House?
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Class Work
Sheet 9-6
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