From the document Dow Jones Industrial Average Historical Performance, published by Dow Jones & Company, we obtained the annual high closes for the Dow for the years 1984-2008.

a. Construct frequency and relative-frequency distributions for the high closes, in thousands. Use cutpoint grouping with classes of equal width 2 and a first lower cutpoint of 1.
b. Draw a relative-frequency histogram for the high closes based on your result in part (a).

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Year High close YeaHigh close 1984 1286.64 1997 8259.31 1985 | 1553.10 |1998| 9374.27 1986 1955.57911497.12 1987 2722.42200011722.98 1988 2183.5020011337.92 1989 2791.41200210635.25 1990 2999.75 2003 10453.92 1991 3168.83 2004 10854.54 1992 3413.2120010940.50 1993 3794.33 2006 12510.57 1994 3978.36 2007 14164.53 0 1995 521647 2008 13058.20 996 6560.91