The Basics
The probability of an event that is "certain" to happen.
What is 100%?
The probability of flipping a standard coin and it landings on "Heads."
What is 1/2?
The total number of suits in a standard deck.
What is 4?
A bag has 3 red and 7 blue marbles. This is the probability of picking a red one.
What is 3/10?
If a weather forecaster says there is a 20% chance of rain, this is the chance it will stay dry.
What is 80%?
This term describes the set of all possible outcomes in a probability experiment.
What is the Sample Space?
The probability of rolling a "4" on a standard six-sided die.
What is 1/6?
The probability of drawing a "Heart" from a full deck.
What is 13/52?
You pick a marble, put it back, and pick again. These types of events are called this.
What are Independent Events?
A spinner has 8 equal sections numbered 1-8. The probability of spinning a number greater than 5.
What is 3/8?
The probability of an event that is "impossible."
What is 0%?
The probability of flipping two coins and having both land on "Tails."
What is 1/4?
The probability of drawing an "Ace" from a full deck.
What is 4/52?
A bag has 5 green and 5 yellow marbles. You pick a green one and keep it. This is the probability that the second marble you pick is also green.
What is 4/9?
If you have 10 socks in a drawer (5 black, 3 blue, 2 white), these are the odds of picking a black sock.
What is 50%?
If the probability of an event is 0.25, this is the probability of it not occuring.
What is 0.75?
The probability of rolling an even number on a standard six-sided die.
What is 3/6?
The probability of drawing a "Red King."
What is 2/52?
A bag has 4 white, 3 black, and 2 blue marbles. The probability of NOT picking a blue marble.
What is 7/9?
In a class of 30 students, 12 wear glasses. This is the simplified fraction of students who wear glasses.
What is 2/5?
This term refers to what "actually happens" during a trial or experiment, as opposed to what is "expected" to happen based on mathematics.
What is Experimental Probability?
The total number of possible outcomes when rolling two six-sided dice.
What is 36?
The probability of drawing either a "Spade" or a "Face Card."
What is 22/52?
In a bag of 10 marbles, you pick two marbles without replacement. This type of probability is called this.
What is Dependent Probability?
This law states that as you perform an experiment more times, the experimental probability gets closer to the theoretical probability.
What is the Law of Large Numbers?