exchangeability.

1. A property whereby rearranging the order of random variables leaves their joint probability distribution unchanged.

2. The quality of being suitable or eligible to be traded or replaced.

Use it for

Words that belong together

• exchangeability assumption
• conditional exchangeability
• exchangeability of observations

On the page

The permutation procedure relied on exchangeability of the observations under the null hypothesis.

Usage notes

Primary category: academic / formal / analytical. Lexical Type: Word. Forms: Usually uncountable; no ordinary plural in this sense. Commonness: uncommon (editorial estimate; not a corpus frequency statistic). Legacy lexical fields mirror sense 1; numbered fields keep each relevant meaning separate. Research distinction: Cambridge probability excerpt verifies permutation-invariant joint distributions. Dictionary separately attests eligibility for exchange; no exchange homograph senses are imported. Writing functions: statistical reasoning, methodological precision.