The Pimco Flexible Credit Income Fund, which aims to provide a flexible approach to credit investing, is one example of an interval fund. Like all interval funds, it does not trade publicly.

This question is particularly important when one has prior expectations of how long an event might last. For example, if one measures an interval to be ∼1.5 s, but expects it to be closer to 1.2 ...

Often survival times are not observed more precisely than the interval (for instance, a day) within which the event occurred. Survival data of this form are known as grouped or interval-censored data.