What is statistic?

  • (noun): A datum that can be represented numerically.


A statistic (singular) is a single measure of some attribute of a sample (e.g., its arithmetic mean value). It is calculated by applying a function (statistical algorithm) to the values of the items of the sample which are known together as a set of data.

Read more about Statistic.

Some articles on statistic:

Control Limits
... of ±3 standard deviations of the plotted statistic from the statistic's mean ... which are completely independent of the distribution of the plotted sample statistic ...
Properties - Information of A Statistic
... Information of a statistic on model parameters can be defined in several ways ... information, which is defined on the statistic model induced by the statistic ...
Logrank Test - Relationship To Other Statistics
... The logrank statistic can be derived as the score test for the Cox proportional hazards model comparing two groups ... equivalent to the likelihood ratio test statistic based from that model ... The logrank statistic is asymptotically equivalent to the likelihood ratio test statistic for any family of distributions with proportional hazard ...
Maximum Spacing Estimation - Goodness of Fit
... The statistic Sn(θ) is also a form of Moran or Moran-Darling statistic, M(θ), which can be used to test goodness of fit ... It has been shown that the statistic, when defined as is asymptotically normal, and that a chi-squared approximation exists for small samples ... In the case where we know the true parameter, Cheng Stephens (1989) show that the statistic has a normal distribution with where γ is the Euler–Mascheroni ...