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Theoretical
Experimental
Counting Principle
Vocabulary
How Likely is it?
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"?

1/4 x 1/2 = 1/8

100

You spin a spinner 50 times. You land on red 15 times. What is the experimental probability of landing on red? (*remember to simplify)

15/50 = 3/10

100
You are trying to decide what to wear to school. You know you have a green pair of pants, a red pair, and a blue pair. You also have a brown shirt, a plaid shirt, and a yellow shirt. How many different outfit combinations can you make?
9
100
Define "theoretical probability."
It is the probability of what should occur.
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 Hampton, VA has 32 jumping horses and 16 standing horses. What is the probability of randomly selecting a jumping horse? (simplify)

16/32 = 1/2

200

You roll a dice 100 times. You land on one 14 times, two 12 times, three 10 times, four 20 times, five 25 times, and six 19 times. What is the experimental probability of rolling a one or a two? (*simplify)

26/100 = 13/50

200

What is the number of possible outcomes for spinning one spinner with 8 equal sections and another spinner with 6 equal sections?

6 x 8 = 48 possible outcomes

200
Define "experimental probability."
The probability of what actually occurs.
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? (simplify)

3/6 x 3/6 = 9/36 = 1/4

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

Amiya and Keyshawn are candidates for class president of the 7th grade. Ajaye, Chishon, and Laura are candidates for vice president. How many winning combinations are possible?

2 x 3 = 6 combos

300

Describe the difference between events that are certain, likely, equally likely, unlikely, or impossible.

Certain would be 100% of the time, likely is anything greater than 50% of the time, equally likely is exactly 50% of the time, unlikely is anything less than 50% of the time, and never is anything that has a 0% chance of occuring.

300

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

impossible

400

There are 3 red marbles, 2 green marbles, and 1 yellow marble in a box. What is the probability that you will pick a red marble then a yellow marble? (simplify)

3/6 x 1/6 = 3/36 = 1/12

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

5/25 = 1/5

400

Ms. French is packing for a trip. She packs a white blouse, a pink blouse, a blue blouse, and a green blouse. She also packs a black suit, a navy blue suit, and a gray suit. How many possible outcomes can there be?

4 x 3 = 12 outcomes

400

What percentage would something be if it were "certain"?

100%

400
How likely is it that a number cube is tossed and lands on any number 1-6?
Certain
500

Jason 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?

1/5 x 1/5 = 1/25 

500

What is the difference between theoretical and experimental probability. 

Theoretical is what you "expect" to happen and experimental is what "actually" happens. 

500

What is the probability of rolling three 4's in a row on a number cube?

1/6 x 1/6 x 1/6 = 1/216

500

What percentage would something be if it was "equally likely"?

50%

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