Probability Vocabulary

Probability Vocabulary

By Erina Hong

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What is the likelihood of getting wet if you jump into a pool?

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What is the likelihood of burning your dinner if you cook it too long?

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What is the likelihood of water boiling at 75 degrees?

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What is the likelihood of getting a ticket if you speed?

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What is the likelihood of winning the lottery tomorrow?

Probability is the likelihood of an event happening and is expressed as a number between 0 and 1

Multiple Choice

A dice is thrown. The probability of getting 1 and 5 is ?

• 1/6

• 4/6

• 2/6

• 5/6

A trial in an experiment is a repeatable procedure.

Throwing a dice a multiple number of times in an experiment.

Spinning the spinner a multiple number of times in an experiment. ​

Multiple Choice

If a bag contains 3 purple, 8 orange, 2 black, and 7 white marbles, what is the probability of an orange marble being selected?

• 5/20

• 8/20

• 15/20

• 20/20

Selecting a marble out of a bag is a trial in an experiment. ​

Multiple Choice

What is the probability of rolling this number cube and getting a 6?

• 6/6

• 1

• 0

• 1/6

An outcome is the result of one trial.

Rolling a "6" can be an outcome of the trial of rolling a dice.

Multiple Choice

What is the probability of flipping this quarter and getting tails?

• 1

• 2

• 1/2

• 2/2

The quarter landing on "Heads" can be an outcome of the trial of flipping the quarter.

Sample Space is a list of all possible outcomes of a trial.

Multiple Choice

How many outcomes are in the sample space for tossing one coin?

• 0

• 1

• 2

• 3

The possible outcomes in the sample space of tossing one coin is Heads and Tails.

Multiple Choice

What is the probability of taking a marble out of the bag without looking and getting a red?

• 3

• 3/10

• 1/3

• 10

Discussion: What are the possible outcomes in the sample space of taking a marble out of this bag?

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Discussion: What are the possible outcomes in the sample space of taking a marble out of this bag?

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{BLUE, BLUE, PURPLE, PURPLE, RED, RED, RED, RED, RED, GREEN, GREEN​}​​

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Discussion: What are the possible outcomes in the sample space of rolling a dice?

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Discussion: What are the possible outcomes in the sample space of rolling a dice?

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{1,2,3,4,5,6}

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Multiple Select

What is the probability of choosing a popsicle at random and getting either a blue or a green?

• 2

• 1/3

• 2/6

• 6

Multiple Choice

What is the probability of spinning a red if we spin 30 times?

• 1/5
• 1/30
• 3/30
• 1/10

Dot Plot is a chart used to organize outcomes of a trial.

If the dot plot charted the experiment of pulling red, orange, yellow, green, blue, violet skittles from a bag, each dot represents the outcome of a trial.

The sample space would be:

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{Red Skittle, Orange Skittle, Yellow Skittle, Green Skittle, Blue Skittle, Violet Skittle}​

Multiple Choice

What is sample space?

• a process with an uncertain result

• a possible result of an action

• a list of all possible outcomes of an event

• a single outcome or group of outcomes

Multiple Choice

What is the sample space when rolling a regular number cube?

• 1

• 2, 4, 6

• 1, 2, 3, 4, 5, 6

• 6

Multiple Choice

What is the sample space for choosing 1 jelly bean from a jar of 4 red, 7 blue, and 2 green jellybeans?

• 4, 7, and 2

• red, blue, green

• 2 green

• 4 red

Multiple Choice

What is the sample space for the jar of marbles?

• red

• red, yellow, green, blue

• red and yellow

• red and green