Listed below are the 50 National Parks in the United States with their corresponding land acreage...  (National Geographic's Guide to the National Parks of the U.S. / 1991*)

Park Name	Land Area (Acres)		Park Name	Land Area (Acres)
Acadia	35,000		Katmai	4,090,000
American Samoa	8,870		Kenai Fjords	670,000
Arches	77,379		Kings Canyon	462,000
Badlands	244,300		Kobuk Valley	1,750,000
Big Bend	801,146		Lake Clark	4,045,000
Biscayne	181,500		Lassen Volcanic	106,000
Bryce Canyon	35,835		Mammoth Cave	52,714
Canyonlands	337,570		Mesa Verde	52,074
Capitol Reef	241,904		Mount Ranier	235,404
Carlsbad Caverns	46,766		North Cascades	684,000
Channel Islands	248,515		Olympic	922,000
Crater Lake	183,227		Petrified Forest	93,533
Denali	6,028,091		Redwood	108,400
Everglades	1,506,539		Rocky Mountain	265,668
Gates of the Arctic	8,500,000		Sequoia	402,000
Glacier Bay	3,280,198		Shenandoah	194,630
Grand Canyon	1,218,375		Theodore Roosevelt	70,416
Grand Teton	310,516		Virgin Islands	12,909
Great Basin	77,109		Voyageurs	218,054
Great Smokey Mountains	520,004		Waterton Glacier	1,013,572
Guadalupe Mountains	86,416		Wind Cave	28,292
Haleakala	28,655		Wrangell-St.Elias	13,188,000
Hawaii Volcanoes	229,177		Yellowstone	2,221,766
Hot Springs	4,837		Yosemite	748,542
Isle Royale	134,400		Zion	146,551

Complete the following frequency distribution (table):

Land Area (Acres)	Tally	Frequency	Rel. Freq. (%)
0 -   99,999
100,000 - 199,999
200,000 - 299,999
300,000 - 499,999
500,000 - 999,999
1,000,000+
Totals

a.	Graph each of the following histograms using the data above.
b.	Are the two graphs similar or dissimilar?  Explain why.
c.	Frequency and relative frequency histograms _______ have the same shape.
	always occasionally	usually never

*As of 12-31-2000, five more sites have been added to the National Park system:  Black Canyon of the Gunnison N.P. (1999), Death Valley N.P. (1994), Dry Tortugas N.P. (1992), Joshua Tree N.P. (1994), and Saguaro N.P. (1994).   /   Nat'l Parks Net