Exam 1

  1. Metainformation

    Tag Value
    fileDescriptive-statistics_uva-correlation-1266-en_uva-correlation-1266-en
    nameuva-correlation-1266-en
    sectionDescriptive statistics/Summary Statistics/Bivariate statistics/Correlation
    typeschoice
    solutionTRUE, FALSE, FALSE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty3.997
    p-value0.1222

    Question

    Of a number of children, age was determined in months, and height in centimeters. The data are plotted in the attached scatterplot.™. The correlation coefficient between height and age is 0.74. The percentage of variation in height that is correlated in this sample with variation in age is:


    1. TRUE: 55%
    2. FALSE: 74%
    3. FALSE: 86%
    4. FALSE: Not to be determined

    1. 55%: Correct
    2. 74%: Incorrect
    3. 86%: Incorrect
    4. Undeterminable: Incorrect