Theoretical
Experimental
Predictions
Vocabulary
Impossible, Unlikely, Equally Likely, Likely, or Certain?
100

Chris is flipping a coin.  What is the theoretical probability the coin will land on heads?

What is 1/2, 0.5, or 50%?

100

Fairen flipped a coin 10 times and landed on heads 4 times. What is the experimental probability of landing on heads?

What is 2/5, or 0.4, or 40%?

100

If you flip a coin 10 times, about how many times should it land on heads?

5
100
Define "probability."
The chance that an event will occur
100
How likely is it that a coin is flipped and lands on tails?
Equally likely
200

The carousel at the fair has 30 horses and 14 of them are standing horses. What is the probability of randomly selecting a standing horse?

What is 7/15, or 0.47, or 47%?

200

Patrick 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%

200
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
200
Define "experimental probability."
The probability of what actually occurs.
200

How likely is it that a standard number cube is tossed and lands on 3?

Unlikely

300
What is the probability of rolling a number greater than 2 with a standard number cube?
What is 2/3, or 0.66, or 66%?
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 or 0.11, or 11%
300

Madelyn 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 blue or green marbles

300
Define "theoretical probability"
The probability that you expect to happen
300

How likely is it that a standard number cube is tossed and it lands on 8?

Impossible

400
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? 
What is 5/8, 0.625 or 62.5%?
400

Jake 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? Mocking Jay = 3 Chickadee = 5 Cardinal = 1 Sparrow = 13 Blue Jay = 3

1/5, or 0.20, or 20%

400

There are 20 students in Mrs. Fowler's TigerTime group. The theoretical probability of choosing a female student to answer a question is 40%. How many girls are in the class?

8 girls

400

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.

400

How likely is it that a standard number cube is tossed and lands on any number 1-6?

Certain

500

Jett spins a spinner with 5 equal sections numbered 1-5. What is the probability he will spin and land on a prime number?

What is 3/5 or 0.6 or 60%?

500

Jaxson has a spinner with 5 equal sections, each a different color. After 10 spins, the pointer had landed on red 40% of the time. 40% represents the...

Experimental Probability of Red
500

Harli has a 0.2 chance of winning Mrs. Fowler's raffle. If there are 30 tickets in the bucket, how many of the tickets have Harli's name on it?

6

500
What do you call the type of event where more than one event is occuring? (Ex: spinning two dice)
Compound event
500

How likely is it that a standard number cube lands on 2 AND a coin lands on heads?

unlikely