The Chemical Analysis of Argonne Premium Coal Samples
Edited by Curtis A. Palmer
U.S. Geological Survey Bulletin 2144
Appendix 2. Statistical parameters for the data in appendix 1 --continued.
| Si HP | Si All | Al HP | Al All | Fe HP | Fe All | Mg HP | Mg All | Ca HP | Ca All | |
| UF PC-1 | ||||||||||
| n | 5 | 11 | 8 | 14 | 11 | 17 | 8 | 14 | 8 | 14 |
| Mean (wt. %) | 2.63 | 3.0 | 1.58 | 1.8 | 1.8 | 1.8 | .080 | .10 | .42 | .5 |
| Standard Dev (wt. %) | .081 | .43 | .046 | .38 | .11 | .34 | .0023 | .028 | .023 | .10 |
| Rel Std Dev (%) | 3.09 | 14.6 | 2.94 | 20.4 | 5.93 | 18.6 | 2.93 | 28.8 | 5.48 | 21.0 |
| Geometric Mean (wt. %) | 2.62 | 2.9 | 1.57 | 1.8 | 1.8 | 1.8 | .079 | .09 | .42 | .5 |
| Dev of Means (%) | .04 | .89 | .04 | 1.76 | .16 | 1.39 | .04 | 3.33 | .13 | 1.98 |
| Kurtosis | .641 | 2.68 | -.753 | .508 | .0521 | 8.44 | .900 | .797 | -2.17 | -1.30 |
| Skewness | -1.05 | 1.53 | -.277 | 1.22 | -.304 | 2.32 | -.904 | 1.42 | .590 | .573 |
| WY PC-2 | ||||||||||
| n | 5 | 11 | 8 | 14 | 11 | 17 | 8 | 14 | 8 | 14 |
| Mean (wt. %) | 1.1 | 1.1 | .68 | .6 | .35 | .33 | .23 | .25 | 1.12 | 1.1 |
| Standard Dev (wt. %) | .12 | .27 | .034 | .10 | .025 | .048 | .028 | .066 | .087 | .13 |
| Rel Std Dev (%) | 11.0 | 24.9 | 4.94 | 17.1 | 6.99 | 14.8 | 12.3 | 26.5 | 7.70 | 11.6 |
| Geometric Mean (wt. %) | 1.1 | 1.0 | .68 | .6 | .35 | .32 | .23 | .24 | 1.12 | 1.1 |
| Dev of Means (%) | .49 | 3.51 | .11 | 1.50 | .23 | 1.22 | .67 | 2.91 | .27 | .61 |
| Kurtosis | -2.93 | .766 | -.973 | -.959 | -1.00 | 1.70 | -1.37 | .321 | -.124 | -.147 |
| Skewness | .153 | -.720 | -.567 | -.680 | -.255 | -1.3 | -.033 | 1.22 | -.840 | .735 |
| IL PC-3 | ||||||||||
| n | 4 | 11 | 7 | 14 | 11 | 17 | 6 | 14 | 8 | 14 |
| Mean (wt. %) | 3.05 | 3.2 | 1.24 | 1.6 | 2.6 | 2.5 | .075 | .09 | .93 | 1.2 |
| Standard Dev (wt. %) | .041 | .43 | .035 | .38 | .16 | .28 | .0037 | .016 | .039 | .44 |
| Rel Std Dev (%) | 1.35 | 13.3 | 2.79 | 24.3 | 6.16 | 11.0 | 4.94 | 17.6 | 4.16 | 35.4 |
| Geometric Mean (wt. %) | 3.04 | 3.2 | 1.24 | 1.5 | 2.6 | 2.5 | .075 | .09 | .93 | 1.2 |
| Dev of Means (%) | .01 | .76 | .03 | 2.72 | .18 | .60 | .11 | 1.43 | .08 | 5.37 |
| Kurtosis | 1.79 | -.0299 | -1.29 | -2.08 | .782 | -.195 | 3.97 | -.966 | -1.40 | -.951 |
| Skewness | .713 | 1.05 | .235 | .337 | -1.32 | -.588 | -1.89 | .393 | -.532 | .920 |
| PITT PC-4 | ||||||||||
| n | 5 | 11 | 7 | 14 | 11 | 17 | 6 | 14 | 8 | 14 |
| Mean (wt. %) | 1.86 | 2.2 | .99 | 1.4 | 1.33 | 1.4 | .036 | .05 | .197 | .26 |
| Standard Dev (wt. %) | .088 | .46 | .011 | .54 | .071 | .29 | .0027 | .017 | .0099 | .093 |
| Rel Std Dev (%) | 4.72 | 20.7 | 1.14 | 39.7 | 5.33 | 20.7 | 7.71 | 35.9 | 5.02 | 35.7 |
| Geometric Mean (wt. %) | 1.86 | 2.2 | .99 | 1.3 | 1.33 | 1.4 | .035 | .04 | .197 | .25 |
| Dev of Means (%) | .09 | 1.83 | .01 | 6.96 | .13 | 1.94 | .25 | 5.13 | .11 | 5.23 |
| Kurtosis | -3.16 | -.951 | -2.26 | -1.61 | .191 | .218 | -3.33 | 2.30 | -1.21 | .330 |
| Skewness | .638 | .872 | -.0177 | .732 | -.0179 | .827 | -5.7x10-15 | 1.55 | -.31 3 | 1.24 |
| POC PC-5 | ||||||||||
| n | 4 | 10 | 7 | 14 | 11 | 17 | 8 | 14 | 8 | 14 |
| Mean (wt. %) | .76 | .9 | .552 | .7 | .51 | .54 | .058 | .07 | .452 | .6 |
| Standard Dev (wt. %) | .038 | .10 | .0062 | .13 | .015 | .085 | .0055 | .021 | .0069 | .15 |
| Rel Std Dev (%) | 4.95 | 12.1 | 1.12 | 19.9 | 2.98 | 15.8 | 9.37 | 28.2 | 1.52 | 27.7 |
| Geometric Mean (wt. %) | .76 | .8 | .552 | .6 | .51 | .53 | .058 | .07 | .452 | .5 |
| Dev of Means (%) | .09 | .65 | .01 | 1.71 | .04 | 1.01 | .36 | 3.43 | .01 | 3.08 |
| Kurtosis | .257 | -1.39 | -1.05 | -.511 | -.33 | 5.51 | -.225 | -.416 | .264 | 1.41 |
| Skewness | .358 | .397 | .812 | .944 | -.892 | 2.26 | 1.29 | .956 | -.0133 | 1.47 |
| UT PC-6 | ||||||||||
| n | 4 | 7 | 6 | 9 | 9 | 12 | 6 | 9 | 5 | 9 |
| Mean (wt. %) | .91 | .89 | .37 | .35 | .30 | .28 | .033 | .036 | .41 | .36 |
| Standard Dev (wt. %) | .027 | .068 | .020 | .035 | .016 | .034 | .0074 | .0071 | .013 | .063 |
| Rel Std Dev (%) | 2.97 | 7.66 | 5.31 | 10.1 | 5.37 | 12.0 | 22.5 | 20.0 | 3.16 | 17.3 |
| Geometric Mean (wt. %) | .91 | .89 | .37 | .35 | .30 | .28 | .032 | .035 | .41 | .36 |
| Dev of Means (%) | .03 | .28 | .12 | .47 | .13 | .74 | 1.77 | 1.72 | .04 | 1.43 |
| Kurtosis | -2.57 | 5.17 | -1.89 | -1.01 | -1.19 | .994 | 5.57 | -1.04 | -3.07 | -1.98 |
| Skewness | .257 | -2.20 | .045 | -.351 | .509 | -1.14 | 2.33 | -.820 | -.293 | -.435 |
| WV PC-7 | ||||||||||
| n | 4 | 7 | 7 | 10 | 10 | 13 | 6 | 10 | 6 | 10 |
| Mean (wt. %) | 5.0 | 5.1 | 3.16 | 3.4 | .39 | .39 | .090 | .09 | .058 | .06 |
| Standard Dev (wt. %) | .22 | .48 | .024 | .44 | .014 | .024 | .0057 | .014 | .0017 | .013 |
| Rel Std Dev (%) | 4.32 | 9.51 | .75 | 12.9 | 3.52 | 6.21 | 6.39 | 15.9 | 2.89 | 19.6 |
| Geometric Mean (wt. %) | 5.0 | 5.1 | 3.16 | 3.4 | .39 | .39 | .090 | .09 | .058 | .06 |
| Dev of Means (%) | .07 | .39 | 0 | .68 | .06 | .18 | .17 | .99 | .03 | 1.46 |
| Kurtosis | 1.50 | .274 | -.861 | 1.64 | -1.30 | 1.69 | -1.67 | 5.40 | 2.50 | 4.10 |
| Skewness | 1.19 | -.105 | -.802 | 1.78 | .242 | .647 | -.470 | 2.14 | 1.15 | 2.14 |
| ND PC-8 | ||||||||||
| n | 3 | 7 | 6 | 10 | 10 | 13 | 7 | 10 | 7 | 10 |
| Mean (wt. %) | .67 | .65 | .400 | .35 | .49 | .46 | .38 | .42 | 1.49 | 1.4 |
| Standard Dev (wt. %) | 0 | .068 | .0036 | .088 | .042 | .067 | .029 | .068 | .061 | .12 |
| Rel Std Dev (%) | 0 | 10.4 | .90 | 24.7 | 8.61 | 14.6 | 7.73 | 16.2 | 4.07 | 8.06 |
| Geometric Mean (wt. %) | .67 | .65 | .400 | .34 | .49 | .46 | .38 | .42 | 1.49 | 1.4 |
| Dev of Means (%) | 0 | .47 | 0 | 3.40 | .32 | 1.06 | .26 | 1.15 | .07 | .31 |
| Kurtosis | ERR | 1.90 | -1.94 | -.534 | -.793 | .404 | -2.14 | -1.37 | -2.33 | .515 |
| Skewness | ERR | -.0112 | -.202 | -1.06 | .975 | -.533 | -.0612 | -1.07 | -.114 | -.935 |
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