statistical control

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• statistical control — Statistical techniques for excluding the influence of specified variables in an analysis. For example, if the data from a sample survey showed a strong association between unemployment and clinical depression, one might want to control for the… …   Dictionary of sociology

• Control chart — One of the Seven Basic Tools of Quality First described by Walter A. Shewhart …   Wikipedia

• Statistical process control — (SPC) is an effective method of monitoring a process through the use of control charts. Control charts enable the use of objective criteria for distinguishing background variation from events of significance based on statistical techniques. Much… …   Wikipedia

• Control limits — Control limits, also known as natural process limits, are horizontal lines drawn on a statistical process control chart, usually at a distance of ±3 standard deviations of the plotted statistic from the statistic s mean. Control limits should not …   Wikipedia

• Statistical power — The power of a statistical test is the probability that the test will reject a false null hypothesis (that it will not make a Type II error). As power increases, the chances of a Type II error decrease. The probability of a Type II error is… …   Wikipedia

• control chart — noun A tool used to determine whether a manufacturing or business process is in a state of statistical control or not. See Also: control limit …   Wiktionary

• statistical process control — staˌtistical ˈprocess conˌtrol abbreviation SPC noun [uncountable] STATISTICS the use of statistic S to check that a process is working efficiently, and find where changes need to be made * * * statistical process control UK US noun [U]… …   Financial and business terms

• statistical quality control — staˌtistical ˈquality conˌtrol abbreviation SQC noun [uncountable] STATISTICS the use of statistic S to check information about the quality of a product or process * * * statistical quality control UK US noun [U] (ABBREVIATION …   Financial and business terms

• Statistical multiplexing — is a type of communication link sharing, very similar to Dynamic bandwidth allocation (DBA). In statistical multiplexing, a communication channel is divided into an arbitrary number of variable bit rate digital channels or data streams. The link… …   Wikipedia

• Statistical parametric mapping — or SPM is a statistical technique for examining differences in brain activity recorded during functional neuroimaging experiments using neuroimaging technologies such as fMRI or PET. It may also refer to a specific piece of software created by… …   Wikipedia

• Statistical survey — Statistical surveys are used to collect quantitative information about items in a population. Surveys of human populations and institutions are common in political polling and government, health, social science and marketing research. A survey… …   Wikipedia