Vocabulary
What is Theoretical.
What you think is going to happen.
I you have a bag of 10 blue marbles and 10 Yellow marbles.What are the chances of pulling 5 blue marbles?
1/2,0.5, or 50%
Layla flipped a coin 10 times and landed on heads 4 times. What is the experimental probability of landing on heads?
2/5, or 0.4, or 40%
How likely is it that a coin is flipped and lands on tails?
Equally likely
If you flip a coin 10 times, about how many times should it land on heads?
5
What is experimental.
What actually happened.
A Classic wood carousel at Carousel Park has 32 horses and 16 of them are standing horses. What is the probability of randomly selecting a standing horse?
1/2, or 0.50, or 50%
Jason rolled a die twenty times. He landed on 2 five times, 3 seven times, 6 two times, and 5 six times. What is the experimental probability of landing on 6?
1/10, 0.1, or 10%
How likely is it that a number cube is tossed and lands on 3?
Unlikely
You have a spinner with four equal sections that are blue, red, green, and yellow. If you spin it 100 times, about how many times should you land on yellow?
25 times
Define theoretical probability
The probability that you expect to happen
What is the probability of rolling a number greater than 2 with a standard number cube?
2/3, or 0.66, or 66%
Nick recorded the types of birds that visit his bird feeder.Based on the results what is the probability the next bird will be a chickadee? Woodpecker = 3 Chickadee = 5 Cardinal = 1 Sparrow = 13 Blue Jay = 3
1/5,0.20, or 20%
How likely is it that a number cube is tossed and it lands on 8?
It impossible.
Trent has 30 marbles in a bag. The theoretical probability of choosing a green or blue marble is 1/2. How many marbles are blue or green?
15 are blue and the other is 15 green marbles
Describe the difference between events that are certain, likely, unlikely, or impossible.
Certain would be 100% of the time, likely is anything greater than 50% of the time, unlikely is anything less than 50% of the time, and impossible is anything that has a 0% chance of occuring.
There are 4 red marbles,3 green marbles,and 1 yellow marble in a box.One marble is taken out of the box.What is the probability that the marble is red or yellow?
5/8, 0.625 or 62.5%
A grocery store recently sold 10 cartons of yogurt, of which 5 were raspberry. What is the experimental probability that the next carton of yogurt sold will be raspberry?
1/2
How likely is it that a number cube is tossed and lands on any number 1-6?
Likely
There are 20 students in Ms.Williams class.The theoretical probability of choosing a female student to answer a question is 40%. How many girls are in the class?
8 girls
What do you call the type of event where more than one event is occuring? (Ex: spinning two dice)
Compound event
Bobby spins a spinner with 5 equal sections numbered 1-5. What is the probability she will spin and land on a composite number?
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
11/100,0.11, or 11%
How likely is it that a cube lands on 2 and a coin lands on heads?
Unlikely
Carley has a 0.2 chance of winning Ms. Williams raffle. If there are 30 tickets in the bucket, how many of the tickets have Carley's name on it?
6