Phrase guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
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noun
A lower bound on the variance of unbiased estimators of a deterministic (fixed, though unknown) parameter.
Definition source: English Wiktionary via Wiktextract
Qualifier: estimation theory
Topics: mathematics, sciences, statistics
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
Named after Harald Cramér and Calyampudi Radhakrishna Rao, who (among others) independently derived it in the 1940s.
