Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_uva-signed-rank-test-803-en_uva-signed-rank-test-803-en
    nameuva-signed-rank-test-803-en
    sectionInferential Statistics/Non-parametric Techniques/Signed Rank test
    typeschoice
    solutionFALSE, TRUE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty3.041
    p-value0.2914

    Question

    In a study with only 5 subjects, the Wilcoxon test is is used to compare two groups. In group 1, 3 subjects are randomly placed and in group 2, 2 subjects are randomly placed. The difference in mean rank is used to compare the two groups comparison. The null hypothesis states that the mean rank order is the same for both groups. The alternative hypothesis states that group 1 has a higher mean rank than group 2. For the comparison used: group 1 – group 2 (group 1 minus group 2). The difference in the sample found is 1.7. Given the exact probability distribution that is shown below, what is now the P-value?


    1. FALSE: 0.1
    2. TRUE: 0.2
    3. FALSE: 0,4

    1. 0.1: Incorrect
    2. 0.2: Correct
    3. 0,4: Incorrect