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Theoretical
Experimental
Making Prediction
Vocabulary
How Likely is it?
100

Bao 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 or 0.125, or 12.5%

100

What do you call the probability that actually happens?

Experimental Probability

100

A factory makes ceramic bowls. Out of 50 bowls, 3 are defective. Predict how many bowls out of 200 will be defective?

12

100

What is the name of an event consisting of only one outcome?

Simple Event

100
How likely is it that a coin is flipped and lands on tails?
Equally likely
200

The classic wood carousel at Carousel Park in Houston, TX has 32 jumping horses and 16 standing horses. What is the probability of randomly selecting a jumping horse?

1/2, or 0.50, or 50%

200

Owen made an experiment. He rolls the die 20 times and it landed on number 3 four times. Based on his experiment, if he rolls the die 100 more times, how many times will it land on a 3?

15

200

A spinner has 5 congruent sections labeled 1 to 5. The theoretical probability of landing on an odd number is 3/5. If Joanna spins the spinner 30 more times, how many times should she get an odd number?

18 

200

What do you call an event made up of two or more simple events?

Compound event

200
How likely is it that a number cube is tossed and lands on 3?
Unlikely
300
What is the probability of rolling two odd numbers in a row with a standard number cube?
1/4, or 0.25, or 25%
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 

300

Based on the students who attended the STAAR Bootcamp today, 12 out of 40 students are wearing white shoes. If 200 students attend the Bootcamp two weeks from now, predict how many will wear white shoes?

60

300

Events for which the outcome of one event does not affect the probability of a second event.

Independent Events

300
How likely is it that a number cube is tossed and it lands on 8?
never going to happen
400
There are 3 red marbles, 2 green marbles, and 1 yellow marble in a box. One marble is taken out and not replaces. A second marble is then taken out and not replaced. What is the probability both marbles that were taken out are red?
1/5, or 0.20, or 20%
400

Vy 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? Simplify your fraction.

Woodpecker = 3             Chickadee = 5 

Cardinal = 1                   Sparrow = 13 

Jay = 3

1/5

400

Out of 15 tennis players who attended the game last Thursday, 3 were wearing a white shirt. If 250 tennis players attend the next game, how many will NOT wear a white shirt?

200

400

A set of all possible outcomes

Sample Space

400
How likely is it that a number cube is tossed and lands on any number 1-6?
Certain
500
Jarvonya 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 or 0.04, or 4%
500

Jacob made an experiment with a six-sided die thrown 50 times. The result was listed below, what is the difference between the experimental and theoretical probability of landing number 5?

1 = 8 times           2 = 6 times           3 = 7 times

4 = 12 times         5 = 10 times          6 = 7 times

1/30

500

Mr. Montenegro has 21 students who went to lunch in 4th period. 14 of them ordered pizza for lunch. If we used his class as a sample, how many students will not order pizza out of 300 students? 

100

500

The set of all outcomes that are not the event.

Complement

500
How likely is it that a number cube lands on 2 and a coin lands on heads?
unlikely