Exam 1

  1. Metainformation

    Tag Value
    fileDescriptive-statistics_eur-descriptive-120-en_eur-descriptive-120-en
    nameeur-descriptive-120-en
    sectionDescriptive statistics/Summary Statistics/Measures of Spread/Standard Deviation
    typenum
    solution3
    tolerance0
    TypePerforming analysis
    ProgramSPSS
    LanguageEnglish
    LevelStatistical Literacy

    Question

    A knowledge test about the professional field of psychologists and pedagogues consists of 20 items and was administered to 202 students from the psychology and pedagogy master’s program. The total number of correctly answered questions is shown in the variable [total score].

    Open the data file.

    How many students have a total score greater than two standard deviations above the mean in the group (no decimals)?


    Solution

    Three students have total scores greater than two standard deviations above the mean in the group. Calculate z-scores for the variable [total score]; there are three individuals with a z-score greater than 2.