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1 <br />1 <br />1 <br />1 <br /> <br /> <br /> <br />1 <br /> <br /> <br />1 <br /> <br /> <br />1 <br /> <br /> <br /> <br />1 <br />RECLAIMED MINE SITE <br />Production <br /> 1.0x0.5 M quad <br />Sample grams Lbs.Acre <br />1 65.3 1163 <br />2 40.2 716 <br />3 42.2 751 <br />4 64.5 1149 <br />5 7.6 135 <br />6 19.4 345 <br />7 13.6 248 <br />8 63.7 1134 <br />9 38.9 693 <br />10 45 B01 <br />11 35 623 <br />12 11.9 212 <br />13 31.6 563 <br />14 26 463 <br />15 41.4 737 <br />16 14.1 251 <br />17 24.2 431 <br />18 17.6 313 <br />19 14.4 256 <br />20 22 392 <br />21 81.9 1458 <br />22 13.6 242 <br />23 27.9 497 <br />24 11.2 199 <br />25 16.5 294 <br />26 22.3 397 <br />27 10.7 191 <br />28 25.1 447 <br />29 16.4 292 <br />30 10.6 189 <br />31 42.2 751 <br />32 32.7 582 <br />33 11.1 198 <br />34 14.5 258 <br />35 27.7 493 <br />36 17.1 304 <br />37 23 410 <br />38 13.2 235 <br />39 10.6 189 <br />40 101.8 1813 <br />41 18.3 326 <br />42 81.7 1455 <br />43 17.9 319 <br />44 91.7 1633 <br />45 24.7 440 <br />46 5.8 103 <br />47 31 552 <br />48 32.5 579 <br />49 32.4 577 <br />50 18.5 329 <br />Table A-10 <br />Colorado Coal Mlne No. 1 <br />1998 Reclaimed Area ~ b <br />Vegetation Production Estimation <br />Genera/ Descriptive Stadadcs <br />Mean 542.52 <br />Standard Error 58.96 <br />Median 420.23 <br />Mode 188.75 <br />Standard Deviation 402.79 <br />Variance 162243.44 <br />Kurtosis 2.11 <br />Skewness 1.80 <br />Range 1709.41 <br />Minimum - 103.28 <br />Maximum 1812.69 <br />Sum 27126.19 <br />Count 50.00 <br />Confidence Level(0.90) 93.70 <br />Estimate Lower CI par Gilbert: <br />I = P(n*1) - ZI(nP(1-P)1112 <br />where p = 0.5 <br />n = 50 <br />Z = 1.2818 <br />then the Lower CI Is defined by the <br />21 st ranked sample of the data set <br /> <br />Interpolation to determine the 21st <br />ranked sample /rpm the data set: <br />The data presented by rank and percentile <br />is ordered by rank from lowest density <br />to highest density. <br />Since the lower confidence limit (329) is <br />greater than the success standard (238.1), <br />the median (420.2) is greater than the success <br />standard at the 90% confidence level. <br />.~~ <br />~,. <br />~~ <br />~\~ a~ ~s <br />~~~ <br />Data Set by Rank and Percentile <br />Sample Densiri Rank Percent <br />46 103 1 0.00% <br />5 135 2 2.04% <br />39 189 3 4.08°,6 <br />30 189 3 4.08% <br />27 191 5 8.16°,6 <br />33 198 6 10.20% <br />24 199 7 12.24% <br />12 212 8 14.29% <br />38 ' 235 9 16.33% <br />22 242 10 18.37% <br />7 246 11 20.41% <br />16 251 12 22.45% <br />19 256 13 24.49% <br />34 258 14 26.53% <br />29 292 15 28.57°h <br />25 294 16 30.61 % <br />36 304 17 32.65% <br />18 313 18 34.69% <br />43 319 19 36.73% <br />41 326 20 38.78% <br />50 329 21 40.82% <br />6 345 22 42.86% <br />20 392 23 44.90% <br />26 397 24 46.94% <br />37 410 25 48.98% <br />17 431 26 51.02% <br />45 440 27 53.06% <br />28 447 28 55.10% <br />14 463 29 57.14% <br />35 493 30 59.18°,6 <br />23 497 31 61.22% <br />47 552 32 63.27% <br />13 563 33 65.31°,6 <br />49 577 34 67.35% <br />48 579 35 69.39°.5 <br />32 582 36 71.43°~ <br />11 623 37 73.47°~ <br />9 693 3B 75.51% <br />2 716 39 77.55°~ <br />15 737 40 79.59% <br />31 751 41 81.63% <br />3 751 41 81.63% <br />10 801 43 85.71% <br />8 1134 44 87.76°h <br />4 1149 45 89.80% <br />1 1163 46 91.84% <br />42 1455 47 93.88°.6 <br />21 1458 48 95.92% <br />44 1633 49 97.96°,6 <br />40 1813 50 100.00°h <br />' A-17 <br />