# problem-2.5

problem-2.5 The graphics can be created as follows:

    > browsers
              IE      Mozilla    Navigator Unidentified         <NA>
              86            4            5            1            4
    > names(browsers) = c("IE","Mozilla","Navigator","Opera","Un.")
    > browsers
           IE   Mozilla Navigator     Opera       Un.
           86         4         5         1         4
    > barplot(browsers)
    > pie(browsers)
    > dotchart(browsers)