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  2. Reliability (statistics) - Wikipedia

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

    Unfortunately, there is no way to directly observe or calculate the true score, so a variety of methods are used to estimate the reliability of a test. Some examples of the methods to estimate reliability include test-retest reliability, internal consistency reliability, and parallel-test reliability. Each method comes at the problem of ...

  3. First-order reliability method - Wikipedia

    en.wikipedia.org/wiki/First-order_reliability_method

    The first-order reliability method, (FORM), is a semi-probabilistic reliability analysis method devised to evaluate the reliability of a system. The accuracy of the method can be improved by averaging over many samples, which is known as Line Sampling .

  4. Human error assessment and reduction technique - Wikipedia

    en.wikipedia.org/wiki/Human_error_assessment_and...

    It provides ready linkage between Ergonomics and Process Design, with reliability improvement measures being a direct conclusion which can be drawn from the assessment procedure. It allows cost benefit analyses to be conducted; It is highly flexible and applicable in a wide range of areas which contributes to the popularity of its use [3]

  5. Questionnaire construction - Wikipedia

    en.wikipedia.org/wiki/Questionnaire_construction

    The following types of reliability and validity should be established for a multi-item scale: internal reliability, test-retest reliability (if the variable is expected to be stable over time), content validity, construct validity, and criterion validity. Factor analysis is used in the scale development process.

  6. Will DirecTV and Dish Merge? Satellite TV Operators Are ... - AOL

    www.aol.com/directv-dish-merge-satellite-tv...

    DirecTV and Dish have launched internet-delivered pay-TV packages, but those have not offset losses on the satellite side. Together, DirecTV and Dish have nearly 20 million customers, which is ...

  7. Does DirecTV Pass Buffett's Test? - AOL

    www.aol.com/news/2011-11-19-does-directv-pass...

    Let's look at DirecTV (NAS: DTV) and three of its industry peers, to see how efficiently they use cash. Here are the ROIC figures for each company over a few periods. Here are the ROIC figures for ...

  8. Technique for human error-rate prediction - Wikipedia

    en.wikipedia.org/wiki/Technique_for_human_error...

    THERP is a first-generation methodology, which means that its procedures follow the way conventional reliability analysis models a machine. [3] The technique was developed in the Sandia Laboratories for the US Nuclear Regulatory Commission. [4] Its primary author is Swain, who developed the THERP methodology gradually over a lengthy period. [2]

  9. DirecTV customer service put to test by Twitter - AOL

    www.aol.com/news/2010-06-08-directv-customer...

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