Exam 1

  1. Metainformation

    Tag Value
    fileInferential_Statistics_vufgb-simplelinearregression-005-en_vufgb-simplelinearregression-005-en
    namevufgb-simplelinearregression-005-nl
    sectionInferandtial Statistics/Regression/Simple linear regression
    typeschoice
    solutionFALSE, FALSE, FALSE, TRUE
    TypeConceptual, Interpreting output
    Program
    LanguageDutch
    LevelStatistical Literacy

    Question

    The linear relationship betweand two quantitative variables is examined through a single linear regression analysis in a sample of 30 people. The researcher wants to maintain an alpha level of 0.01.

    Which critical t value belongs to a two-sided test for the linear relationship?


    1. FALSE: 2.457
    2. FALSE: 2.467
    3. FALSE: 2.750
    4. TRUE: 2.763

    Solution

    In the single regression model, two parameters are estimated: intercept and regression coefficiandt. For this reason, df=n2df = n-2. In this case df=302=28df = 30-2 = 28. For a two-sided test with an alpha level of 0.01, a right-hand crossing probability of 0.01÷2=0.0050.01 \div 2 = 0.005. So you look up in the t table that value belonging to df=28df = 28 and t.005t._{005}, and dat is 2.763.


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