2012-08-03_PERMIT FILE - C1980005

• Permit No: C1980005
• IBM Index Class Name: Permit File
• Doc Date: 8/3/2012
• Section_Exhibit Name: Tab 13 Postmining Land Use
• Media Type: D
• Archive: No

2.5
2
1.5
1
a�
is 0.5
IC
-0.5
-1
-1.5
Figure 1. Two - sample t- Values for Cover in the PSCM Sagebrush Reference Area 1997 -2011*
—C —Two- sample t- values Critical t from table (2 tailed 95% confidence)
Since the absolute
value of calculated t
is less than critical t
in all years, there is
no statistically
significant difference
between the half
reference area and
the whole reference
area.
The mean cover
of the whole
reference area
for 15 years
of data is 65.0
The mean cover
of the half
reference area
for 15 years of
data is 66.7.
1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011
Year
*Note that sample adequacy (d =0.1, a =0.1) was achieved for both the half reference and the whole reference each year except 2000 and 2003.
1 s -ZBct