Theoretical
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"?
What is 1/8 or 0.125, or 12.5%
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
The probability that is determined on the basis of reasoning. The ratio of favorable events to the total number of events that could occur
What is "Theoretical Probability"
How likely is it that a coin is flipped and lands on tails?
What is Equally likely
In a game, the probability of correctly guessing which of 5 boxes contains a tennis ball is 1/5 or 20%. About how many winners would be expected if 60 contestants play the game?
What is 12 winners?
Jess spins a pointer 25 times and finds an experimental probability of the pointer landing on 3 to be 4/25 or 16%. The theoretical probability of the spinner landing on 3 is 1/4 or 25%. Why might there be a significant difference between the theoretical and experimental probabilities?
More trials are needed. After Jess conducts more trials, the experimental probability should approach the theoretical probability of Jess's event.
The probability based on trials. This is the ratio of the number of outcomes in which a specific event occurs to the total number of trials.
What is "experimental probability"?
How likely is it that a number cube is tossed and lands on 3?
What is Unlikely
What is the probability of rolling two odd numbers in a row with a standard number cube?
1/4, or 0.25, or 25%
This is a model of a real-world situation that can be used to find probabilities.
What is a "Simulation"?
How likely is it that a standard number cube is tossed and it lands on 8?
What is impossible
Javin spins a spinner with 5 equal sections numbered 1-5 and he spins another spinner with 5 equal sections with the letters A-E. What is the probability he will spin a 4 and a B?
What is 1/25 or 0.04, or 4%
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. What is the probability that the first outfit she wears is the gray suit with a pink blouse?
What is 1 out of 12?
The set of all possible outcomes of an event
What is a "Sample Space"
How likely is it that a standard number cube is tossed and lands on any number 1-6?
What is Certain
You create two digit numbers using the numbers 2, 6, 7, 9 and put the numbers in a box. What is the probability of choosing a number that contains both a 6 and 9?
What is 2/12 or 1/6, or 16.67%
In Staci's town, 60% of registered people vote regularly. A spinner with equal-sized sections numbered 0-9 can be used to represent those who do and those who do not vote. She assigns the numbers 0-5 to those who "do vote" and 6-9 to those who "do not vote" Based on the simulation results, what is the probability that at least one person out of three does not vote?
380 799 331 205 851 182 117 768 715 410
What is 4/10 or 40%
An event that consists of two or more events.
How likely is it that a standard number cube lands on 2 and a coin lands on heads?
What is unlikely