Vocabulary
Basic Probability
Predictions Using Probabilities
Probabilities in Percent Form
100

This is the likelihood of an event occuring. 

a. chance 

b. probability 

c. percent 

d. independent

What is probability?

100
This is the probability, in simplest form, of rolling an even number on a die 
What is 1/2?
100

Of 10 people at the park, 4 really like the new playground. Use the information to predict how many out of 100 people would really like the new playground.

40 out of 100 people

100
This percent represents the probability of rolling a 3 on a ten-sided die.
What is 10%?
200

This the result of an event. 

a. dependent 

b. event 

c. outcome 

d. chance

What is outcome?

200
You and four friends order food at a restaurant. This is the probability that your food will be served first.
What is 1/5?
200

If 12 people out of 50 saw the new movie with Reese Witherspoon, how many people out of 1,000 would you expect to see the movie?

240 people

200
On a spinner with blue, yellow, green, and red sections, this percent represents the probability of spinning blue.
What is 25%
300

The outcome you want is this. 

a. favorable 

b. probability 

c. independent 

d. wanted

What is favorable?

300
This is the probability, in simplest form, of rolling greater than 2 on a ten-sided die numbered 1-10.
What is 4/5?
300

If 14 of 60 students are interested in participating in athletics, how many out of 420 would you expect to be interested in athletics?

98 students 

300
This percent represents the probability of not spinning orange on a spinner with yellow, green, orange, and red sections.
What is 75%
400

The difference between impossible and improbable. (Explain)

Impossible - 0% chance of a particular outcome

Improbably - very unlikely/small percentage that a particular outcome will occur

400
A bag has seven Snickers and three Milky Way bars. This the probability of pulling out a Snickers?
What is 7/10?
400

For every 75 light bulbs produced at a factory, 2 are defective. In a box of 300 light bulbs, how many would likely be defective?

8 defective light bulbs.

400
This percent represents the probability of drawing a green marble from a bag with 9 green and 11 black marbles.
What is 45%
500

Describe the outcomes of these two events: a) flipping a coin b) spinning a spinner with equal sections of red, blue, green, yellow and orange. How many outcomes are there for each event?

a) You could toss heads or tails; two outcomes b) You could spin red, blue, green, yellow or orange; five outcomes

500
The letters A through I are placed in a bag. This is the probability of drawing D.
What is 1/9?
500

At the school carnival, Jesse won the balloon dart game 1 out of every 5 times he played. If he plays another 15 times, about how many times can he expect to win?

3 times

500
This percent represents the probability of rolling a 7 on a standard die 
What is 0%?
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