Exam 1

  1. Metainformation

    Tag Value
    fileDescriptive-statistics_uva-standard-deviation-471-en_uva-standard-deviation-471-en
    nameuva-standard-deviation-471-en
    sectionDescriptive statistics/Summary Statistics/Measures of Spread/Standard Deviation
    typeschoice
    solutionFALSE, FALSE, TRUE, FALSE
    TypeConceptual
    LanguageEnglish
    LevelStatistical Literacy
    IRT-Difficulty3.987
    p-value0.1274

    Question

    In an American study, the temperature of a number of patients was measured in degrees Fahrenheit. The standard deviation is reported as a given value s. We express the values in degrees Celsius, by subtracting 32 from all values and multiplying the result by 5/9. Then, for the standard deviation of the new values, the following


    1. FALSE: Remains equal to s
    2. FALSE: Becomes 5/9 × s + 32
    3. TRUE: Becomes 5/9 × s
    4. FALSE: Becomes 25/81 × s

    1. Remains equal to s: Incorrect
    2. Becomes 5/9 × s + 32: Incorrect
    3. Becomes 5/9 × s: Correct
    4. Becomes 25/81 × s: Incorrect