PERMFILE128113

• Permit No: C1981028
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: Soil and Vegetation Inventory Revegetation Research on the Proposed Keenesburg Surface Coal Mine
• Section_Exhibit Name: Appendix L-1
• Media Type: D
• Archive: No

Table 1. Recozd of measurements--Coots Keenesburg Mine
Area sampled:
Subsite:
Date;
Observer:
Attribute measured:
Sample size (n) ..............................................
Mean (x) .....................................................
Sum of squares (Sx2) .........................................
Variance of sample (sx2 - Sx2 / n-1) .........................
Standazd deviation (sx) ......................................
Standard error (s-) ..........................................
x
• Coefficient of variation (CV ~ 100 (sx / z )) ................
Confidence limits (CL~ ~ z ± t sx)* ....................upper
lower
CL90 .................................upper
lower
CL80 .................................upper
lower
* iihere t is the tabular value at n-1 degrees of freedom and the designated
level of probability. It is anticipated that CL may be needed at 9990,
90;~ or 80;5 probability, depending on the statistical test to be
calculated.

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