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O que (quem) é U-statistic - definição
U-statistic
CLASS OF STATISTICS IN ESTIMATION THEORY
U statistic; U Statistics; U statistics; U-statistics; U-Statistic; U Statistic; U-Statistics
In statistical theory, a U-statistic is a class of statistics that is especially important in estimation theory; the letter "U" stands for unbiased. In elementary statistics, U-statistics arise naturally in producing minimum-variance unbiased estimators.
statistic
FUNCTION OF RANDOM VARIABLES
StatistiC; Sample statistic; Sample statistics
(statistics)
Frequency: The word is one of the 3000 most common words in English.
1.
Statistics are facts which are obtained from analysing information expressed in numbers, for example information about the number of times that something happens.
Official statistics show real wages declining by 24%...
There are no reliable statistics for the number of deaths in the battle.
= figure
N-COUNT: usu pl
see also vital statistics
2.
Statistics is a branch of mathematics concerned with the study of information that is expressed in numbers.
...a professor of Mathematical Statistics.
N-UNCOUNT
Statistic
FUNCTION OF RANDOM VARIABLES
StatistiC; Sample statistic; Sample statistics
A statistic (singular) or sample statistic is any quantity computed from values in a sample which is considered for a statistical purpose. Statistical purposes include estimating a population parameter, describing a sample, or evaluating a hypothesis.
