Probability Flashcard Review Math 8

Front

What is the definition of probability?

Back

Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Front

How do you calculate the probability of a single event?

Back

The probability of a single event is calculated by dividing the number of favorable outcomes by the total number of possible outcomes.

Front

What is the formula for calculating the probability of independent events?

Back

For independent events, the probability of both events occurring is the product of their individual probabilities: P(A and B) = P(A) * P(B).

Front

What is a sample space in probability?

Back

A sample space is the set of all possible outcomes of a probability experiment.

Front

What is the difference between dependent and independent events?

Back

Independent events do not affect each other's outcomes, while dependent events do.

Front

How do you find the probability of multiple events occurring in sequence?

Back

For independent events, multiply the probabilities of each event. For dependent events, adjust the probabilities based on previous outcomes.

Front

What is a tree diagram and how is it used in probability?

Back

A tree diagram is a visual representation of all possible outcomes of an event, used to calculate probabilities.

Front

What is the probability of selecting a specific color from a bag of marbles?

Back

The probability is calculated by dividing the number of marbles of that color by the total number of marbles.

Front

How do you calculate the probability of complementary events?

Back

The probability of complementary events is calculated as P(A') = 1 - P(A), where A' is the complement of event A.

Front

What is the concept of combinations in probability?

Back

Combinations refer to the selection of items from a larger set where the order does not matter.