An article in the Amer. J. Enol. and Viti. (2006: 486–490) includes the following alcohol content measurements (%) for a sample of n = 35 port wines.

a. Graph the data. Based on the graph, what is a representative value for the alcohol content in port wines?
b. Calculate the mean and the median. Are these values consistent with your answer in (a)? Why or why not?

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16.35 17.73 19.33 19.62 19.07 19.48 19.45 18.85 22.75 19.20 19.90 20.00 19.37 21.22 16.20 23.78 20.05 18.68 19.97 19.20 19.50 17.75 23.25 17.85 18.82 17.48 18.00 15.30 19.58 19.08 19.17 19.03 17.15 19.60 22.25