Exam 1

  1. Metainformation

    Tag Value
    fileReliability_uu-reliability-017-en_uu-reliability-017-en
    nameuu-reliability-017-en
    sectionReliability
    typeschoice
    solutionFALSE, TRUE, FALSE, FALSE
    TypeCalculation
    LanguageEnglish
    LevelStatistical Literacy

    Question

    In Vedic education, transcendental meditation plays an important role. Through meditation techniques, students’ consciousness is expanded. In a questionnaire study of the effect of meditation on consciousness, an existing test with six items and a reliability rxx’ = .50 is extended by three equivalent items.

    How high do you estimate the reliability of the extended test V for consciousness?


    1. FALSE: Rvv’is approximately .50
    2. TRUE: Rvv’is approximately .60
    3. FALSE: Rvv’is approximately .70
    4. FALSE: Rvv’is approximately .75

    Solution

    Explanation: The new test is 9 items long (6+3=9). The extension factor is 1.5 (9/6=1.5). The reliability of this manygde test is calculated using the following formula:

    $r_{xx’} = $

    Filling in gives:

    $r_{xx’} = = = = 0.60 $