The file MarketPenetration contains the market penetration value (i.e., the percentage of the country population that are users) for the 15 countries that lead the world in total number of Facebook users:

Source: Data extracted from www.socialbakers.com/facebook-statistics/.
a. Compute the first quartile (Q1), the third quartile (Q3), and the interquartile range.
b. List the five-number summary.
c. Construct a boxplot and describe its shape.

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52.56 33.09 5.37 19.4132.52 41.69 51.61 30.12 39.07 30.62 38.16 49.35 27.13 53.45 40.01