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Unit Vocabulary
Likelihood
Favorable Outcomes, Events and Sample Space
Relative Frequency and
Experimental Probability
Theoretical Probability
Random Trivia
100

The desired outcome or set of outcomes.

Event

100

Determine whether the situation should be described as IMPOSSIBLE, UNLIKELY, AS LIKELY AS NOT, LIKELY or CERTAIN

You flip a coin and it lands on tails.

AS LIKELY AS NOT

There is a 50% chance it is heads
There is a 50% chance it is tails

It is AS LIKELY to land on tails AS it is to NOT

100


ACTION: Spin the spinner once

What is the sample space for the action?

How many possible outcomes are in the sample space?

Sample Space: 1, 2, 3, 4

Possible Outcomes: 4

100

Complete the blanks entirely for credit. Each blank is a word.

Experimental Probability is the likelihood that an event will occur based on its relative _________.
(times the event occurs / ________)




Experimental Probability is the likelihood that an event will occur based on its relative FREQUENCY

(times the event occurs / TOTAL)

100

Based off of your class notes, fill in the blanks to complete the equation for THEORETICAL PROBABILITY.

# of ____ Outcomes / # of possible Outcomes

Theoretical Probability is equal to

# of FAVORABLE Outcomes / # of possible Outcomes

100

What bird symbolizes America?

Bald Eagle

200

The set of all possible outcomes 

The SAMPLE SPACE is the set of all possible outcomes

200

Determine whether the situation should be described as IMPOSSIBLE, UNLIKELY, AS LIKELY AS NOT, LIKELY or CERTAIN

The earth will rotate around the sun

CERTAIN

200

EVENT: Choose a boy

What are the favorable outcomes?

Favorable Outcomes: Chris, Alex, Steve

200

The table show the results of rolling a number cube 100 times. 

What is the RELATIVE FREQUENCY of the event "roll a 2"? 

Relative Frequency = 14 times rolling two / 100 rolls

Relative Frequency = 14/100 = 7/50

Relative Frequency = 0.14

Relative Frequency = 14%

200

P(blue-button)=6/12=1/2

P(blue-button)=0.5

P(blue-button)=50%

200

What language is the most widely spoken in the entire world?

Chinese (Mandarin)

300

-The likelihood something is to occur based on logic and reasoning.

-Favorable Outcomes / Possible Outcomes

THEORETICAL PROBABILITY is the likelihood an event will occur.

Favorable Outcomes / Possible Outcomes

300

Determine whether the situation should be described as IMPOSSIBLE, UNLIKELY, AS LIKELY AS NOT, LIKELY or CERTAIN

A tiger will fly

IMPOSSILBLE

300

EVENT: Throw a dart and hit an odd number

How many possible favorable outcomes are in the sample space?

Possible favorable outcomes: 10

300

The table shows the class's results for spinning the spinner 40 times. 

Based on these results, if the class were to spin another 40 times, what is the EXPERIMENTAL PROBABILITY of spinning a number less than 3.

P(<3)=22/40

P(<3)=11/20

P(<3)=0.55

P(<3)=55%

300

Which of the following shows THEORETICAL PROBABILITY?


II. A teacher chooses 1 student at random from a class of 13 boys and 12 girls.
P(boy)=13/25

There are 13 boys - favorable outcomes
There are 25 students - possible outcomes (boys and girls)


300

What is the most populous city in the United States of America?

New York

400

Events that cannot happen at the same time and either one or the other must happen.

Complementary Events

400

Determine whether the situation should be described as IMPOSSIBLE, UNLIKELY, AS LIKELY AS NOT, LIKELY or CERTAIN

Your friend will win the jackpot in the lottery

UNLIKELY

400

Event: Roll a multiple of 2

What are the favorable outcomes?

Favorable outcomes: 2,4,6

400

The table shows the results of rolling a number cube 100 times. 

Based on the results, write the experimental probability of the event "roll a factor of 2" as a fraction, decimal and percent.

1 and 2 are both factors of 2. We rolled a 1 22-times and a 2 14 times. We rolled a factor of 2 36 times out of the 100 rolls. 

P(factor of 2)=36/100

P(factor of 2)=0.36

P(factor of 2)=36%

400

You choose 1 card at random.

What is the theoretical probability of choosing a card with an odd number and a hand?

P(odd+hand) = 2/8 = 1/4 = 0.25 = 25%

400

What is the most common letter in English?

E

500

-The likelihood an event will occur based on its relative frequency

-times the event occurs / total trials

EXPERIMENTAL PROBABILITY describes the likelihood an event will occur based on its relative frequency

-times the event occurs / total trials

500

Determine whether the situation should be described as IMPOSSIBLE, UNLIKELY, AS LIKELY AS NOT, LIKELY or CERTAIN

Mr. McDonald will eat Taco Bell sometime over the next month.

LIKELY

500

Event: Choose a heart

How many possible favorable outcomes are in the sample space?

Possible Favorable Outcomes: 13

500

P(sprinkles) = 6/16 = 3/8

500

You choose 1 marble at random. What is the theoretical probability that you choose a marble that is not red? Write your answer 3 ways

P(G/B) = 11/20 = 0.45 = 45%

500

What is the smallest country in the world?

Vatican City