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The Chemical Analysis of Argonne Premium Coal Samples

Edited by Curtis A. Palmer
U.S. Geological Survey Bulletin 2144


Statistical parameters for the data in appendix 1.

Appendix 2. Statistical parameters for the data in appendix 1 --continued.

  Ag HP Ag All Cd HP Cd All Sn HP Sn All Sb HP Sb All Cs HP
UF PC-1                  
n 3 6 6 6 3 6 6 6 6
Mean (ppm) .5 .3 .12 .12 .95 1.3 .51 .51 1.7
Standard Dev (ppm) .14 .17 .057 .057 0 .39 .034 .034 .20
Rel Std Dev (%) 29.8 50.2 49.7 49.7 0 30.5 6.64 6.64 12.0
Geometric Mean (ppm) .5 .3 .11 .11 .95 1.3 .51 .51 1.7
Dev of Means (%) 2.79 10.22 9.95 9.95 0 4.09 .19 .19 .61
Kurtosis ERR .687 .664 .664 ERR -3.10 .364 .364 -3.16
Skewness 1.57 1.11 1.11 1.11 ERR .071 -.156 -.156 -.063
WY PC-2                  
n 3 6 6 6 3 6 6 6 6
Mean (ppm) .24 .2 .11 .11 .323 .6 .18 .18 .195
Standard Dev (ppm) .085 .11 .020 .020 0 .36 .021 .021 .010
Rel Std Dev (%) 36.2 70.6 18.5 18.5 0 58.9 11.6 11.6 4.86
Geometric Mean (ppm) .23 .1 .11 .11 .323 .5 .18 .18 .195
Dev of Means (%) 4.20 23.26 1.27 1.27 0 13.95 .58 .00579 .10
Kurtosis ERR .353 3.70 3.70 ERR .201 -1.62 -1.62 -1.22
Skewness 1.43 1.03 1.91 1.91 ERR 1.17 -.397 -.397 .198
IL PC-3                  
n 3 6 6 6 3 6 6 6 6
Mean (ppm) .6 .5 .7 .7 .71 2 .84 .84 1.1
Standard Dev (ppm) .18 .18 .14 .14 .094 1.1 .062 .062 .29
Rel Std Dev (%) 28.9 36.5 19.4 19.4 13.3 67.7 7.45 7.45 25.3
Geometric Mean (ppm) .6 .5 .7 .7 .70 1 .83 .83 1.1
Dev of Means (%) 2.96 5.19 1.45 1.45 .06 22.21 .24 .24 2.82
Kurtosis ERR .333 1.66 1.66 ERR -.966 1.49 1.49 -3.17
Skewness 1.39x10-15 1.14 1.36 1.36 1.73 .809 -.882 -.882 .019
PITT PC-4                  
n 3 6 6 6 3 6 6 6 6
Mean (ppm) .3 .2 .08 .08 .552 .9 .22 .22 .75
Standard Dev (ppm) .13 .14 .028 .028 .0053 .46 .022 .022 .061
Rel Std Dev (%) 42.1 73.3 34.3 34.3 .93 50.6 10.0 10.0 8.16
Geometric Mean (ppm) .3 .2 .08 .08 .573 .8 .22 .22 .75
Dev of Means (%) 6.43 23.82 4.83 4.83 0 10.7 .43 .43 .28
Kurtosis ERR .213 -.779 -.779 ERR .120 -.890 -.890 -2.24
Skewness .423 1.14 .738 .738 1.73 .954 -.340 -.340 -.432
POC PC-5                  
n 3 6 5 6 3 6 6 6 6
Mean (ppm) .23 .16 .08 .07 .371 40 .4 .4 .24
Standard Dev (ppm) .093 .090 .014 .02 0 57 .14 .14 .024
Rel Std Dev (%) 40.6 55.6 19.0 30.9 0 159 33.8 33.8 9.91
Geometric Mean (ppm) .22 .15 .074 .07 .371 5 .4 .4 .24
Dev of Means (%) 6.04 12.2 1.61 5.12 0 700 4.81 4.81 .40
Kurtosis ERR .760 1.119 -.088 ERR 4.29 -1.69 -1.69 .192
Skewness .242 1.33 -.968 -.920 ERR 2.02 .508 .508 .876
UT PC-6                  
n 3 6 5 5 3 6 6 6 6
Mean (ppm) .15 .3 .07 .07 .17 .3 .10 .10 .14
Standard Dev (ppm) .050 .18 .012 .012 .03 .12 .012 .012 .012
Rel Std Dev (%) 32.8 58.7 17.5 17.5 15.8 45.8 12.3 12.3 8.68
Geometric Mean (ppm) .15 .3 .07 .07 .17 .2 .10 .10 .14
Dev of Means (%) 4.21 19.1 1.19 1.19 .89 9.21 .60 .60 .32
Kurtosis ERR -2.11 -1.52 -1.52 ERR -1.99 .00139 .00139 -1.55
Skewness -1.18 .155 .824 .824 -1.73 .471 .967 .967 -.706
WV PC-7                  
n 3 6 6 6 3 6 6 6 6
Mean (ppm) 1.2 .8 .07 .07 1.75 1.8 .54 .54 2.1
Standard Dev (ppm) .53 .55 .016 .016 0 .18 .041 .041 .27
Rel Std Dev (%) 43.2 64.6 24.9 24.9 0 10.1 7.65 7.65 12.9
Geometric Mean (ppm) 1.2 .7 .07 .07 1.75 1.8 .54 .54 2.1
Dev of Means (%) 7.17 16.9 3.23 3.23 0 .41 .23 .23 .63
Kurtosis ERR .243 .971 -.971 ERR .666 3.66 3.66 -3.30
Skewness -.031 1.21 -1.23 -1.23 ERR .961 1.75 1.75 -.011
ND PC-8                  
n 3 3 6 6 3 4 5 6 6
Mean (ppm) .15 .15 .043 .043 .4 .6 .15 .15 .09
Standard Dev (ppm) .062 .062 .0072 .0072 .16 .45 .010 .020 .012
Rel Std Dev (%) -39.7 39.7 18 18 43.3 76.2 6.80 12.7 13.0
Geometric Mean (ppm) .15 .15 .041 .041 .4 .5 .15 .15 .09
Dev of Means (%) 5.76 5.76 1.58 1.58 5.84 21.9 .19 .64 .77
Kurtosis ERR ERR 1.52 1.52 ERR 1.96 -.906 2.45 1.86
Skewness .219 .219 -1.45 -1.45 1.73 1.53 -.516 1.33 -1.34
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