The file MobileCommerce contains the following mobile commerce penetration values, the percentage of the country population that bought something online via a mobile phone in the past month, for twenty-eight of the world’s economies: 23 27 26 25 40 19 26 36 23 33 23 11 38 21 26 23 21 33 40 15 55 30 41 31 47 37 33 28 Source: Data extracted from www.slideshare.net/wearesocialsg/digital-in-2017- global-overview. 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.