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Efficiency (statistics)

In statistics, efficiency is a measure of quality of an estimator, of an experimental design, or of a hypothesis testing procedure. Essentially, a more efficient estimator needs fewer input data or observations than a less efficient one to achieve the Cramér–Rao bound. An efficient estimator is characterized by having the smallest possible variance…

Overview, Estimators & Hypothesis tests

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Estimators

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Efficiency (statistics)

Nodes54
Edges53
Triples6
Avg. degree1.96
Density0.037037
Components1

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Important terminology

estimator efficiency variance efficient mean estimators unbiased displaystyle sample parameter relative distribution statistics thus cramér rao possible often example theta

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
the sample mean is an efficient estimator of the population mean of a normal distributioninstance ofan estimator0.80text
for exampleinstance ofan estimator0.80text
but can be an inefficient estimator of a mixture distribution of two normal distributions with the same meaninstance ofan estimator0.80text
different variancesinstance ofan estimator0.80text
timeinstance ofefficiency relates to the ability of a design to achieve the objective of the study with minimal expenditure of resources0.80text
moneyinstance ofefficiency relates to the ability of a design to achieve the objective of the study with minimal expenditure of resources0.80text

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