Tables and Probability Flashcards
(15 cards)
What is the probability of an event?
The probability of an event is a measure of the likelihood that the event will occur, expressed as a number between 0 and 1.
If a die is rolled, what is the probability of rolling a number greater than 4?
The probability is 1/3, since there are 2 favorable outcomes (5 and 6) out of 6 possible outcomes.
True or False: The sum of the probabilities of all possible outcomes of an event is always 1.
True
In a probability table, what does each entry represent?
Each entry represents the probability of a specific outcome occurring.
Fill in the blank: The probability of an impossible event is ____.
0
What is the total number of outcomes when flipping a coin?
There are 2 outcomes: heads and tails.
If the probability of an event is 0.25, what is the probability of the event not happening?
The probability is 0.75.
What is a sample space in probability?
A sample space is the set of all possible outcomes of a probability experiment.
Multiple Choice: What is the probability of drawing a red card from a standard deck of cards? A) 1/2 B) 1/4 C) 1/3 D) 1/52
A) 1/2
True or False: The probability of a certain event is 1.
True
What does it mean if two events are independent?
It means the occurrence of one event does not affect the probability of the other event.
Fill in the blank: The formula for calculating probability is ____ = (Number of favorable outcomes) / (Total number of outcomes).
Probability
What is the probability of rolling a 3 on a fair six-sided die?
The probability is 1/6.
Multiple Choice: In a bag of 10 marbles (4 red, 3 blue, 3 green), what is the probability of picking a blue marble? A) 1/3 B) 3/10 C) 2/5 D) 4/10
B) 3/10
What is the expected value in probability?
The expected value is the average of all possible outcomes, weighted by their probabilities.
