Vocabulary
Basic Probability
Theoretical Probability
Predictions
Random
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 of rolling an even number on a die?
What is 1/2?
100
Maria is flipping a coin and spinning a spinner. The spinner has 4 equal sections labeled A-D. What is the probability the coin will land on heads and the spinner will land on the letter "A"?
1/8
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 people
100
This percent represents the probability of rolling a 3 on a ten-sided die.
What is 10%?
200
The probability of what actually occurs.
experimental probability
200
There are 8 green marbles, 7 blue marbles and 5 red marbles in a jar. What is the probability of not drawing a red marble?
3/4
200
The classic wood carousel has 32 jumping horses and 16 standing horses. What is the probability of randomly selecting a standing horse?
1/3
200
If 12 people out of 50 saw the new Spiderman movie, how many people out of 1,000 would you expect to see the movie?
240
200
This percent represents the probability of drawing a green marble from a bag with 9 green and 11 black marbles.
What is 45%
300
It is the probability of what should occur.
theoretical probability
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
What is the probability of rolling two odd numbers in a row with a standard number cube?
1/4
300
If 14 of 40 students are interested in participating in athletics, how many out of 420 would you expect to be interested in athletics?
147 students would be interesting in athletics
300
A letter tile is randomly selected from a bag, recorded, and replaced 100 times. The results are listed below. What is the experimental probability of selecting the letter "E"?
A = 16 E = 11 I = 29 O = 19 U = 25
11/100
400
When one event occurs and the item is replaced before the second event occurs.
independent event
400
What is the probability of spinning a 5 on the spinner? 
What is 1/3?
400
There are 3 red marbles, 2 green marbles, and 1 yellow marble in a box. One marble is taken out, not replaced, and a second marble is then taken out. What is the probability both marbles that were taken out are green?
1/15
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
Pedro recorded the types of birds that visit his bird feeder. Based on the results below, what is the probability the next bird will be a chickadee?
Woodpecker = 3 Chickadee = 5 Cardinal = 1 Sparrow = 13 Blue Jay = 3
1/5
500
When one event occurs and that item is not replaced before the second event occurs.
dependent event
500
The letters A through I are placed in a bag. This is the probability of drawing D.
What is 1/9?
500
Valencia spins a spinner with 5 equal sections numbered 1-5 and she spins another spinner with 5 equal sections with the letters A-E. What is the probability she will spin a 4 and a B?
1/25
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
500
Simplify the fraction:
880/1000
22/25