In this resource, you distinguished between independent and dependent events with respect to determining the probability of those events.

Independent events are two or more events that occur in sequence where the outcome of the first event does not affect the outcome of the events that follow. You can calculate the probability of a series of independent events by using the Multiplication Rule of Probability:

P(A and B) = P(A) × P(B)

Dependent events are two or more events that occur in sequence where the outcome of the first event does affect the outcome of the events that follow. You can calculate the probability of a series of dependent events by using the Multiplication Rule of Probability:

P(A and B) = P(A) × P(B|A)

With this notation for dependent events, P(B|A) means “the probability that event B will happen given that event A already happened.” This distinction is important, because with dependent probability, the outcomes for event B are dependent upon event A. In other words, the outcome of event A influences the possible outcomes for event B.