Exam 1

  1. Metainformation

    Tag Value
    fileProbability_uva-variance-1095-en_uva-variance-1095-en
    nameuva-variance-1095-en
    sectionProbability/Elementary Probability/Random variables/Variance
    typeschoice
    solutionFALSE, TRUE, FALSE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty2.719
    p-value0.4358

    Question

    You have 1,000 euros and a plan to invest your money. In the following table you will find the possible net profits in a year and the probability of these profits.â  Plan

    ————- ——- Net profits Chance € 5000 0,001 € 1000 0,005 € 0 0,994 ————- ——-

     What is the standard deviation of profit?


    1. FALSE: € 10
    2. TRUE: € 173
    3. FALSE: € 990
    4. FALSE: € 4990

    1. € 10: Incorrect
    2. € 173: Correct
    3. 990 €: Incorrect
    4. € 4990: Incorrect