Probability Rules

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 does a Venn diagram represent in probability?

Back

A Venn diagram visually represents the relationships between different sets, showing how they overlap and the probabilities of various events.

Front

How do you calculate the probability of an event occurring?

Back

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

Front

What is the formula for the probability of the union of two events A and B?

Back

P(A or B) = P(A) + P(B) - P(A and B).

Front

What does 'A or B' mean in probability?

Back

'A or B' means that either event A occurs, event B occurs, or both events occur.

Front

What does 'Not B' mean in probability?

Back

'Not B' refers to the complement of event B, meaning that event B does not occur.

Front

What is the probability of an event that is certain to happen?

Back

The probability of an event that is certain to happen is 1.

Front

What is the probability of an event that is impossible?

Back

The probability of an event that is impossible is 0.

Front

How do you interpret a probability of 0.13?

Back

A probability of 0.13 means that there is a 13% chance of the event occurring.

Front

What is the significance of the shaded region in a Venn diagram?

Back

The shaded region in a Venn diagram represents the outcomes that satisfy the condition specified in the question.