Question

Return Period Refers to

• A. The Probability of Exceedance of an event
• B. The Probability of Non-Exceedance of an event
• C. The Inverse of the Probability of Exceedance of an event
• D. The Inverse of the Probability of Non­ Exceedance of an event

Answer 1

The correct option is C The Inverse of the Probability of Exceedance of an event

The estimated likelihood of an event to occur is called recurrence interval or Return Period. It is the inverse of the probability that the event will be exceeded in one year, or the inverse of the expected number of occurrences in a year.