Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_uva-simple-linear-regression-794-en_uva-simple-linear-regression-794-en
    nameuva-simple-linear-regression-794-en
    sectionInferential Statistics/Regression/Simple linear regression
    typeschoice
    solutionFALSE, TRUE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty5.046
    p-value0.0098

    Question

    To investigate whether a relationship exists between x and y, a regression analysis is performed. The directional coefficient is tested and is found to be significant. The values for x and y are plotted in the graph below. The graph shows that probably an assumption has been violated. This is the assumption that states that


    1. FALSE: The population mean of y is linearly related to x.
    2. TRUE: The population standard deviation of y is the same across all values of x.
    3. FALSE: The values of x and y are randomly drawn from the population.

    1. The population mean of y is linearly related to x.: Incorrect
    2. The population standard deviation of y is the same across all values of x.: Incorrect: Correct
    3. The values of x and y are drawn randomly from the population…: Incorrect