Exam 1

  1. Metainformation

    Tag Value
    fileDescriptive-statistics_uva-summary-statistics-1192-en_uva-summary-statistics-1192-en
    nameuva-summary-statistics-1192-en
    sectionDescriptive statistics/Summary Statistics
    typeschoice
    solutionFALSE, FALSE, FALSE, TRUE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty2
    p-value0.5905

    Question

    According to the World Bank, about 45% of all rural people in China had less than €1 a day to spend in 1990. Suppose you repeatedly take a sample of 100 rural Chinese and you count the number of people who had less than €1 to spend that day. Then what is the mean and standard deviation of this distribution?


    1. FALSE: Mean 0.45, standard deviation 0.2475
    2. FALSE: Mean 45, standard deviation 0.2475
    3. FALSE: Mean 45, standard deviation 0.4975
    4. TRUE: Mean 45, standard deviation 4.975
    5. FALSE: Mean 45, standard deviation 24.75

    1. Mean 0.45, standard deviation 0.2475: Incorrect
    2. Mean 45, standard deviation 0.2475: Incorrect
    3. Mean 45, standard deviation 0.4975: Incorrect
    4. Mean 45, standard deviation 4.975: Correct
    5. Mean 45, standard deviation 24.75: Incorrect