Exam 1

  1. Metainformation

    Tag Value
    fileDescriptive-statistics_uva-variance-454-en_uva-variance-454-en
    nameuva-variance-454-en
    sectionDescriptive statistics/Summary Statistics/Measures of Spread/Variance
    typeschoice
    solutionFALSE, TRUE, FALSE, FALSE
    TypeCalculation
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty4.171
    p-value0.0882

    Question

    We drew a random sample from a population, with the following 5 sample outcomes: 6, 9, 6, 11, 13. The estimated variance of the sample mean is


    1. FALSE: 1.38
    2. TRUE: 1.9
    3. FALSE: 2.38
    4. FALSE: 9.5

    1. 1.38: Incorrect
    2. 1.9: Correct
    3. 2.38: Incorrect
    4. 9.5: Incorrect