Table 4. Potentially-Toxic Elements: Statistical analysis.
| a) Kruskal Wallis test. | ||||
|---|---|---|---|---|
| Element | N | Kruskal Wallis Statistic | Degrees Freedom | p-value |
| Pb | 135 | 47.382 | 2 | 0.000 |
| Hg | 101 | 22.864 | 2 | 0.000 |
1Corresponds to 0.05 significance level.
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