Exam 1

  1. Metainformation

    Tag Value
    fileDescriptive-statistics_uva-variance-512-en_uva-variance-512-en
    nameuva-variance-512-en
    sectionDescriptive statistics/Summary Statistics/Measures of Spread/Variance
    typeschoice
    solutionFALSE, FALSE, FALSE, TRUE
    TypeCalculation
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty3.613
    p-value0.1836

    Question

    One takes a sample of 8 individuals from a population and measures their weight loss (in kg) after following a 12-week diet, with the following results:______. 12, 7, 2, 5, 12, 20, 3, 8. The sample variance s2 is equal to


    1. FALSE: 4.35
    2. FALSE: 5.9
    3. FALSE: 30.48
    4. TRUE: 34.84

    1. 4.35: Incorrect
    2. 5.9: Incorrect
    3. 30.48: Incorrect
    4. 34.84: Correct