Exam 1

  1. Metainformation

    Tag Value
    fileProbability_uva-expected-value-214-en_uva-expected-value-214-en
    nameuva-expected-value-214-en
    sectionProbability/Elementary Probability/Random variables/Expected value
    typeschoice
    solutionTRUE, FALSE, FALSE
    TypeCalculation
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty0.766
    p-value0.8963

    Question

    Given is the probability distribution of X

    ———- —– —– X -1 1 P(X = x) 0.6 0.4 ———- —– —–

    The expectation value E(X) is equal to


    1. TRUE: -0.2
    2. FALSE: 0.1
    3. FALSE: 1

    1. 0.2: Correct
    2. 0.1: Incorrect
    3. 1: Incorrect