Probability Flashcard: Lessons 5.1 through 5.4

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

What is the formula for calculating the probability of an event?

Back

P(Event) = (Number of favorable outcomes) / (Total number of possible outcomes)

Front

What does P(A or B) represent in probability?

Back

P(A or B) represents the probability that either event A occurs, event B occurs, or both events occur.

Front

How do you calculate P(A and B) for two independent events?

Back

P(A and B) = P(A) * P(B) for independent events.

Front

What is conditional probability?

Back

Conditional probability is the probability of an event occurring given that another event has already occurred, denoted as P(A | B).

Front

How do you calculate conditional probability?

Back

P(A | B) = P(A and B) / P(B) if P(B) > 0.

Front

What is the probability of drawing a diamond from a standard deck of cards?

Back

The probability of drawing a diamond is P(diamond) = 13/52 = 25%.

Front

What is the probability of selecting shoes or pants if there are 20 favorable outcomes out of 36 total outcomes?

Back

P(Shoes or Pants) = 20/36.

Front

What is the probability of selecting sandals if the probability is given as 56%?

Back

P(Sandals) = 0.56 or 56%.

Front

What is the probability of selecting basketball if the probability is given as 64/135?

Back

P(Basketball) = 64/135.