Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_vufgb-equation-016-en_vufgb-equation-016-en
    namevufgb-equation-016-en
    sectionInferential Statistics/Regression/Equation, Inferential Statistics/Sampling Distributions/Correlation, Inferential Statistics/Regression
    typeschoice
    solutionFALSE, TRUE, FALSE, FALSE
    TypeCalculation, Interpreting output
    Program
    LanguageEnglish
    LevelStatistical Thinking

    Question

    See table below

    It is known that the averages of x and y are, respectively, 13 and 7.5, sx=2.45s_{x} = 2.45 and the estimated regression line is ŷ=4.61+0.22x\hat{y} = 4.61+0.22x. What is the correlation between x and y?


    1. FALSE: 0.22
    2. TRUE: 0.54
    3. FALSE: -0.22
    4. FALSE: -0.54

    1. Incorrect
    2. Correct
    3. Incorrect
    4. Incorrect