Exam 1

  1. Metainformation

    Tag Value
    fileDescriptive-statistics_uva-correlation-1399-en_uva-correlation-1399-en
    nameuva-correlation-1399-en
    sectionDescriptive statistics/Summary Statistics/Bivariate statistics/Correlation
    typeschoice
    solutionFALSE, FALSE, TRUE, FALSE
    TypeConceptual, Calculation
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty0
    p-value0.9242

    Question

    One study looked at 33 elderly people to examine the relationship between education level (number of years in school) and the ability to focus on something focus. Below is a scatterplot of the results, with the corresponding regression line.Ê Suppose an additional person with 18 years of education is measured. For which value of focus for that person would the correlation coefficient increase the most increase?


    1. FALSE: -7.7
    2. FALSE: 0
    3. TRUE: 2.4
    4. FALSE: 10.0

    1. 7.7: Incorrect
    2. 0: Incorrect
    3. 2.4: Correct
    4. 10.0: Incorrect