Descriptive Statistics of Raw Data | |||||||||
Variables | Mean | Std. Error | Std. Deviation | Skewness | Kurtosis | Z-Test | Shapiro-Wilk | ||
Skewness | Kurtosis | Statistic | p-value | ||||||
Ni | 373.874 | 90.620 | 373.634 | 2.017 | 4.080 | 3.667 | 3.838 | 0.758 | 0.001 |
Pb | 37.330 | 1.387 | 5.718 | 1.670 | 3.372 | 3.036 | 3.172 | 0.846 | 0.009 |
Cd | 1.575 | 0.063 | 0.260 | 0.277 | −0.706 | 0.504 | −0.664 | 0.943 | 0.350 |
Mn | 1213.000 | 169.022 | 696.896 | 0.690 | 1.338 | 1.255 | 1.259 | 0.910 | 0.100 |
Cu | 64.154 | 12.208 | 50.334 | 2.217 | 6.248 | 4.031 | 5.878 | 0.785 | 0.001 |
Zn | 56.409 | 6.052 | 24.955 | 0.816 | −0.073 | 1.484 | −0.069 | 0.915 | 0.120 |
Cr | 1172.891 | 352.242 | 1452.331 | 2.070 | 4.406 | 3.764 | 4.145 | 0.719 | 0.000 |
Ti | 578.083 | 61.916 | 255.286 | 1.021 | 0.200 | 1.856 | 0.188 | 0.896 | 0.058 |
V | 61.139 | 5.855 | 24.141 | 0.924 | 1.783 | 1.680 | 1.677 | 0.936 | 0.273 |
Fe | 72065.855 | 11702.250 | 48249.612 | 1.919 | 4.478 | 3.489 | 4.213 | 0.816 | 0.003 |
As | 4.823 | 0.883 | 3.639 | 0.615 | −0.667 | 1.118 | −0.627 | 0.914 | 0.118 |