Exam 1

  1. Metainformation

    Tag Value
    fileDescriptive-statistics_uva-variance-800-en_uva-variance-800-en
    nameuva-variance-800-en
    sectionDescriptive statistics/Summary Statistics/Measures of Spread/Variance
    typeschoice
    solutionFALSE, FALSE, TRUE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty3.707
    p-value0.1717

    Question

    The within and between-groups variance both estimate the standard deviation of the groups. These two variances are approximately the same in the sample approximately equal if ‘A’ the standard deviations of the populations (groups) are equal and ‘B’ the null hypothesis stating that the averages of the populations (groups) are equal is TRUE.


    1. FALSE: ‘A’ is false and ‘B’ is true.
    2. FALSE: ‘A’ is TRUE and ‘B’ is false.
    3. TRUE: ‘A’ and ‘B’ are both TRUE.

    1. ‘A’ is false and ‘B’ is true : Incorrect
    2. A’ is TRUE and ‘B’ is false: Incorrect
    3. A’ and ‘B’ are both true: Correct