observed sample
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Sample maximum and minimum — Box plots of the Michelson–Morley experiment, showing sample maximums and minimums. In statistics, the maximum and sample minimum, also called the largest observation, and smallest observation, are the values of the greatest and least elements of … Wikipedia
Sample size — The sample size of a statistical sample is the number of observations that constitute it. It is typically denoted n , a positive integer (natural number).Typically, all else being equal, a larger sample size leads to increased precision in… … Wikipedia
Sample preparation (mass spectrometry) — The sample preparation for mass spectrometry is used for the optimisation of a sample for the analysis in a mass spectrometer (MS).These have depending on their ion source different requirements for volume, concentration, and composition of the… … Wikipedia
Observed information — In statistics, the observed information, or observed Fisher information, is the negative of the second derivative (the Hessian matrix) of the log likelihood (the logarithm of the likelihood function). It is a sample based version of the Fisher… … Wikipedia
sample mean — the arithmetic mean of the observed values of a random sample, conventionally denoted by a barred variable, e.g., X (read “X barâ€) … Medical dictionary
Sample exclusion dimension — Exclusion dimension is a dimension in the exact concept learning with queries. [citebook|title=Algorithmic Learning Theory: 12th International Conference, ALT 2001, Washington, DC, USA, November 2001, Proceedings|editor=N. Abe, R. Khardon, T.… … Wikipedia
Strip map and sample — is a method of archaeological excavation applied in the United Kingdom to preserve archaeological remains by record in the face of development threat. It involves machine stripping of an area, plotting observed features onto a site plan and then… … Wikipedia
German tank problem — During World War II, production of German tanks such as the Panther was accurately estimated by Allied intelligence using statistical methods. In the statistical theory of estimation, estimating the maximum of a uniform distribution is a common… … Wikipedia
Statistical hypothesis testing — This article is about frequentist hypothesis testing which is taught in introductory statistics. For Bayesian hypothesis testing, see Bayesian inference. A statistical hypothesis test is a method of making decisions using data, whether from a… … Wikipedia
Likelihood function — In statistics, a likelihood function (often simply the likelihood) is a function of the parameters of a statistical model, defined as follows: the likelihood of a set of parameter values given some observed outcomes is equal to the probability of … Wikipedia
Student's t-test — /tee test /, Statistics. a test for determining whether or not an observed sample mean differs significantly from a hypothetical normal population mean. [1945 50; see STUDENT S T DISTRIBUTION] * * * ▪ statistics in statistics, a method of… … Universalium
