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Theoretical
Experimental
Counting Principle
Vocabulary
How Likely is it?
100
Maria spinning a spinner. The spinner has 4 equal sections labeled A-D. What is the probability the spinner will land on the letter "A"?
1/4 or 25%
100
Hasaan has a spinner with 5 equal sections, each a different color. After only 10 spins, the pointer had landed on red 40% of the time. After a whopping 1,000 spins, the pointer landed on red only 22% of the time. How can Hasaan account for this change in experimental probability?
As the number of trials increase, the experimental probability reaches closer to the theoretical probability.
100
You roll a number cube, what are the odds in favor of rolling a 3 or 5?
1 to 2
100
Define "theoretical probability."
It is the probability of what should occur in the real world. Equally likely outcomes of an experiment.
100
How likely is it that a coin is flipped and lands on tails?
Equally likely
200
A bag of marbles has 3 red marbles, 5 black marbles, and 2 white marbles. What is the probability of pulling out a red marble?
3/10 or 30%
200
Ms. Catalano has a non-uniform spinner where red is 1/2 the spinner, blue is 1/4, and black is 1/4. After 500 spins, about how many times would you expect red to show up?
250 times
200
What is the number of possible outcomes for spinning one spinner with 8 equal sections and another spinner with 6 equal sections?
48 possible outcomes
200
The probability that is based on repeated trials of an experiment.
What is experimental probability.
200
How likely is it that a number cube is tossed and lands on 3?
Unlikely
300
I have a pack of Starburst. There are 8 orange, 3 red, and 1 yellow. What is the probability that I pick a pink one? Impossible, unlikely, likely, or certain?
Impossible
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
Amiya and Kyshon are candidates for class president of the 7th grade. Cijae, William, and Ashley are candidates for vice president. How many winning combinations are possible?
6
300
What does it mean if an event is certain? Give an example of a certain event.
It will occur, 100% likely When you roll a number cube you will get a number from 1 to 6.
300
How likely is it that a number cube is tossed and it lands on 8?
never going to happen
400
There are 7 red marbles, 2 green marbles, and 1 yellow marble in a box. Is it certain, likely, unlikely, or impossible that I select a green marble?
Unlikely-20%
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, or 0.20, or 20%
400
Ms. Martinez 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. What is the probability that the first outfit she wears is the gray suit with a pink blouse?
1 out of 12
400
What does it mean if an event is unlikely? Give an example.
Less than 50% chance of it happening. I roll a 5 on a dice (1/6 or 16.6%)
400
An event has even odds when the odds in favor of (or against) the event is 1:1. What is the probability of an event with even odds?
1/2
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
A deli owner records the following information about his customers: 48 ordered Turkey 25 ordered Vegetarian 27 orded Ham If he sells 20 sandwiches today about how many of them will be Turkey?
About 10 (9.6 to be exact but you can't sell a piece of a sandwich!)
500
If you roll a number cube 30 times, how many times would you expect to roll a multiple of 3?
10 times
500
The possible results of an experiment
What is outcomes.
500
You roll an 8-sided number octahedron, and your friend rolls a 4-sided number pyramid. How many different possible outcomes are there for the pairs of numbers rolled?
32 outcomes