Exam 1

  1. Metainformation

    Tag Value
    fileDescriptive-statistics_uva-variance-592-en_uva-variance-592-en
    nameuva-variance-592-en
    sectionDescriptive statistics/Summary Statistics/Measures of Spread/Variance
    typeschoice
    solutionTRUE, FALSE, FALSE, FALSE
    TypeCalculation
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty4.408
    p-value0.0299

    Question

    Weight in kilograms of 9 persons in a sample was determined. The variance of these weights was 225. If the weights were expressed, what would be the sample variance of those new numbers be?


    1. TRUE: 900
    2. FALSE: 450
    3. FALSE: 100
    4. FALSE: 225

    1. 900: Correct
    2. 450: Incorrect
    3. 100: Incorrect
    4. 225: Incorrect