Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_uva-equation-220-en_uva-equation-220-en
    nameuva-equation-220-en
    sectionInferential Statistics/Regression/Equation
    typeschoice
    solutionFALSE, TRUE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty5.207
    p-value0.0077

    Question

    For the variables X and Y, the mean of X is 3 and the mean of Y is 3, the standard deviation of X is 1 and the standard deviation of Y is 2, and the covariance between X and Y is 1. The regression equation of Y on X is then


    1. FALSE: Y’ = 1 +2X
    2. TRUE: Y’ = X
    3. FALSE: Y’ = 3 + X

    1. Y’ = 1 +2X: Incorrect
    2. Y’ = X: Correct
    3. Y’ = 3 + X: Incorrect