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  2. Validity (statistics) - Wikipedia

    en.wikipedia.org/wiki/Validity_(statistics)

    Validity is the main extent to which a concept, conclusion, or measurement is well-founded and likely corresponds accurately to the real world. [1] [2] The word "valid" is derived from the Latin validus, meaning strong.

  3. Validity - Wikipedia

    en.wikipedia.org/wiki/Validity

    Validity (statistics), the degree to which a statistical tool measures that which it is purported to measure Statistical conclusion validity, establishes the existence and strength of the co-variation between the cause and effect variables

  4. Historical method - Wikipedia

    en.wikipedia.org/wiki/Historical_method

    Historical method is the collection of techniques and guidelines that historians use to research and write histories of the past. Secondary sources, primary sources and material evidence such as that derived from archaeology may all be drawn on, and the historian's skill lies in identifying these sources, evaluating their relative authority, and combining their testimony appropriately in order ...

  5. Internal validity - Wikipedia

    en.wikipedia.org/wiki/Internal_validity

    Again, this does not mean that the independent variable produced no effect or that there is no relationship between dependent and independent variable. Vice versa, changes in the dependent variable may only be affected due to a demoralized control group, working less hard or motivated, not due to the independent variable.

  6. Glossary of logic - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_logic

    The term or phrase that is being defined in a definition. definiens The words or phrases that are used to provide the definition of the definiendum. definite description A phrase that uniquely identifies a particular individual or concept, often using "the" to specify uniqueness. definition

  7. Historical fiction - Wikipedia

    en.wikipedia.org/wiki/Historical_fiction

    Historical fiction is a literary genre in which a fictional plot takes place in the setting of particular real historical events.Although the term is commonly used as a synonym for historical fiction literature, it can also be applied to other types of narrative, including theatre, opera, cinema, and television, as well as video games and graphic novels.

  8. Test validity - Wikipedia

    en.wikipedia.org/wiki/Test_validity

    Test validity is the extent to which a test (such as a chemical, physical, or scholastic test) accurately measures what it is supposed to measure.In the fields of psychological testing and educational testing, "validity refers to the degree to which evidence and theory support the interpretations of test scores entailed by proposed uses of tests". [1]

  9. Validity (logic) - Wikipedia

    en.wikipedia.org/wiki/Validity_(logic)

    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: