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  2. Reliability (statistics) - Wikipedia

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

    Four practical strategies have been developed that provide workable methods of estimating test reliability. [7] 1. Test-retest reliability method: directly assesses the degree to which test scores are consistent from one test administration to the next. It involves: Administering a test to a group of individuals

  3. Intelligence source and information reliability - Wikipedia

    en.wikipedia.org/wiki/Intelligence_source_and...

    The source reliability is rated between A (history of complete reliability) to E (history of invalid information), with F for source without sufficient history to establish reliability level. The information content is rated between 1 (confirmed) to 5 (improbable), with 6 for information whose reliability can not be evaluated.

  4. Psychometric software - Wikipedia

    en.wikipedia.org/wiki/Psychometric_software

    Lertap5 (Laboratory of Educational Research Test Analysis Program) is a comprehensive software package for test and survey analyses, developed for Windows and Macintosh computers with Microsoft Excel. Lertap5 includes: Test, item and option statistics; Classification consistency and mastery test analysis; Cheating detection procedures

  5. Generalizability theory - Wikipedia

    en.wikipedia.org/wiki/Generalizability_theory

    In contrast, an example of a relative, or norm-referenced, decision would be when the individual's test score is used to either (a) determine relative standing as compared to his/her peers (i.e. a child's score on a reading subtest is used to determine which reading group he/she is placed in), or (b) make intra-individual comparisons (i.e ...

  6. Statistical graphics - Wikipedia

    en.wikipedia.org/wiki/Statistical_graphics

    They can also provide insight into a data set to help with testing assumptions, model selection and regression model validation, estimator selection, relationship identification, factor effect determination, and outlier detection. In addition, the choice of appropriate statistical graphics can provide a convincing means of communicating the ...

  7. Congeneric reliability - Wikipedia

    en.wikipedia.org/wiki/Congeneric_reliability

    Congeneric reliability applies to datasets of vectors: each row X in the dataset is a list X i of numerical scores corresponding to one individual. The congeneric model supposes that there is a single underlying property ("factor") of the individual F, such that each numerical score X i is a noisy measurement of F.

  8. Internal consistency - Wikipedia

    en.wikipedia.org/wiki/Internal_consistency

    In statistics and research, internal consistency is typically a measure based on the correlations between different items on the same test (or the same subscale on a larger test). It measures whether several items that propose to measure the same general construct produce similar scores. For example, if a respondent expressed agreement with the ...

  9. Validity (statistics) - Wikipedia

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

    Content validity evidence involves the degree to which the content of the test matches a content domain associated with the construct. For example, a test of the ability to add two numbers should include a range of combinations of digits. A test with only one-digit numbers, or only even numbers, would not have good coverage of the content domain.