find the mean, median, and mode of the data, if possible. If any of these measures cannot be found or a measure does not represent the center of the...

1.    find the mean, median, and mode of the data, if possible. If any of these measures cannot be found or a measure does not represent the center of the data, explain why.

a.     Concert Tickets The number of concert tickets purchased online for the last 13 purchases

4 2 5 8 6 6 4 3 2 4 7 8 5

b.    Tuition The 2009-2010 tuition and fees (in thousands of dollars) for the top 10 liberal arts colleges (Source: U.S. News and World Report)