Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_uva-simple-linear-regression-41-en_uva-simple-linear-regression-41-en
    nameuva-simple-linear-regression-41-en
    sectionInferential Statistics/Regression/Simple linear regression
    typeschoice
    solutionFALSE, TRUE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty5.255
    p-value0.0072

    Question

    To establish a relationship between the continuous variables x and y, a regression analysis is performed. Before interpreting the results interpretation, a number of assumptions for testing the regression coefficients are checked. As a first indication, the values of x and y are plotted on a graph. The graph shows that the assumption of regression is violated which states


    1. FALSE: That the population mean of y is linearly related to x.
    2. TRUE: That the population standard deviation of y is the same for all values of x.
    3. FALSE: That the population distribution of y is normally distributed for all values of x.

    1. That the population mean of y is linearly related to x.: Incorrect
    2. That the population standard deviation of y is the same for all values of x.: Correct
    3. That the population distribution of y for all values of x is normally distributed…: Incorrect