Exam 1

  1. Metainformation

    Tag Value
    fileDescriptive-statistics_uva-correlation-780-en_uva-correlation-780-en
    nameuva-correlation-780-en
    sectionDescriptive statistics/Summary Statistics/Bivariate statistics/Correlation
    typeschoice
    solutionFALSE, TRUE, FALSE
    TypeConceptual, Calculation
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty-1.248
    p-value0.9489

    Question

    There are two tests designed to determine whether a person has Prodlaws psychosis. One is measured with values between 0 and 200 and the other with values between 0 and 1. The researcher then calculates then a z-score of each of the outcomes of the two tests. She does this to compare the outcomes of the two tests. She can do this because


    1. FALSE: Z-scores are percentages.
    2. TRUE: Z-scores have a mean of 0 and a standard deviation of 1.
    3. FALSE: Z-scores make the variables dependent.

    1. Z-scores percentages are: Incorrect
    2. Z-scores have a mean of 0 and a standard deviation of 1: Correct
    3. Z-scores make the variables dependent…: Incorrect