2.3 I am not sure if you need the chart

473 Injuries Year Injuries Train-Miles per Train-Mile 1990 72 657 1991 382 74 516 1992 411 74 555 1993 559 75 745 1994 497 75 663 1995 573 76 754 1996 513 77 666 1997 601 78 770 1998 535 78 683 1999 481 82 2000 658 84 781 2001 746 88 850 2002 90 979 2003 726 89 812 2004 679 89 760 2005 935 90 1.040 2006 761 92 828 2007 938 95 990 Source: U.S. Department of Transportation, Federal Railroad Administration 584 877 2.3 An investor has a portfolio consisting of holdings in nine stocks (Returns.xlsx). The end- of-year returns over the previous year are, in increasing order, -5.0, 3.7,0.9, 4.8, 6.2, 8.9, 11.2, 18.6, 25.4. a. Compute the summary statistics (mean, median, MAD, and S). b. Just before the close of business in the last trading session of the year, the company that had reported the 5.0 percent drop declares bankruptcy, so the return becomes 100 per- cent. Recompute the results, and comment on your findings. c. Are simple summary statistics relevant to this investor? How would you modify the calculations, if at all