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Notes on Topic 4:
Variability

    Age


    This distribution is positively skewed and quite peaked.
    Mean=20.24 Median=20 StDv= 1.77 Skewness=2.42 Kurtosis=8.52

    GPA (Grade Point Average at UNC)


    This distribution has somewhat more scores above the middle, has a lot of variation and is relatively flat. Are there more females with low GPA's than we might expect?
    Mean=3.06 Median=3.00 StDv=0.44 Skewness=0.20 Kurtosis=-0.71

    Reported Math SAT score


    Are these scores higher than from the general population?
    Mean=589 Median=600 StDv=94.35 Skewness=-0.51 Kurtosis=-.03

    Satisfaction with the UNC Experience


    These scores tend to cluster in the middle, making for a high peak, and are somewhat negatively skewed. Are the males more satisfied?
    Mean=6.88 Median=7.00 StDv=1.14 Skewness=-1.22 Kurtosis=3.10