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[1] [2] The word "valid" is derived from the Latin validus, meaning strong. The validity of a measurement tool (for example, a test in education) is the degree to which the tool measures what it claims to measure. [3] Validity is based on the strength of a collection of different types of evidence (e.g. face validity, construct validity, etc ...
The corresponding conditional of a valid argument is a logical truth and the negation of its corresponding conditional is a contradiction. The conclusion is a necessary consequence of its premises. An argument that is not valid is said to be "invalid". An example of a valid (and sound) argument is given by the following well-known syllogism:
The validity of an inference depends on the form of the inference. That is, the word "valid" does not refer to the truth of the premises or the conclusion, but rather to the form of the inference. An inference can be valid even if the parts are false, and can be invalid even if some parts are true.
Test validity, validity in educational and psychological testing; Face validity, the property of a test intended to measure something; Construct validity, refers to whether a scale measures or correlates with the theorized psychological construct it measures; Content validity, the extent to which a measure represents all facets of a given construct
Verification is intended to check that a product, service, or system meets a set of design specifications. [6] [7] In the development phase, verification procedures involve performing special tests to model or simulate a portion, or the entirety, of a product, service, or system, then performing a review or analysis of the modeling results.
The word or group of words that is to be defined is called the definiendum, and the word, group of words, or action that defines it is called the definiens. [6] For example, in the definition "An elephant is a large gray animal native to Asia and Africa", the word "elephant" is the definiendum, and everything after the word "is" is the ...
A misspelling in English might be made by someone used to a different spelling in another language; for example, "address" is translated "adresse" in French and German. Many Spanish words are similar or identical to English words, but with an "n" inserted, or replacing an "m", leading to errors: "inmigrant" from " inmigrante ", "cementery" from ...
The plain meaning rule attempts to guide courts faced with litigation that turns on the meaning of a term not defined by the statute, or on that of a word found within a definition itself. According to the plain meaning rule, absent a contrary definition within the statute, words must be given their plain, ordinary and literal meaning.