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The standard deviation of a random variable, sample, statistical population, data set, or probability distribution is the square root of its variance. It is algebraically simpler, though in practice less robust, than the average absolute deviation.
Standard language. A standard language (or standard variety, standard dialect, standardized dialect or simply standard) is a language variety that has undergone substantial codification of its grammar, lexicon, writing system, or other features. [1] [2] Typically, the varieties that undergo standardization are those associated with centers of ...
Standard (metrology), an object that bears a defined relationship to a unit of measure used for calibration of measuring devices. Standard (timber unit), an obsolete measure of timber used in trade. Breed standard (also called bench standard), in animal fancy and animal husbandry. BioCompute Standard, a standard for next generation sequencing.
The International Organization for Standardization ( ISO / ˈaɪsoʊ / [3]) is an independent, non-governmental, international standard development organization composed of representatives from the national standards organizations of member countries. [4] Membership requirements are given in Article 3 of the ISO Statutes.
A standardized test is a test that is administered and scored in a consistent, or "standard", manner. Standardized tests are designed in such a way that the questions and interpretations are consistent and are administered and scored in a predetermined, standard manner. [1]
Standard English. In an English-speaking country, Standard English ( SE) is the variety of English that has undergone codification to the point of being socially perceived as the standard language, associated with formal schooling, language assessment, and official print publications, such as public service announcements and newspapers of ...
For correlated random variables the sample variance needs to be computed according to the Markov chain central limit theorem.. Independent and identically distributed random variables with random sample size
Scientific notation is a way of expressing numbers that are too large or too small to be conveniently written in decimal form, since to do so would require writing out an inconveniently long string of digits. It may be referred to as scientific form or standard index form, or standard form in the United Kingdom.