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Pearson correlation coefficients calculated for the elements determined in the tap water sample from the Gullele Sub-City of Addis Ababa.
| Element | Fe | Zn | Cu | Mn | Pb | As |
|---|---|---|---|---|---|---|
| Fe | 1 | |||||
| Zn | 0.340 | 1 | ||||
| Cu | 0.271 | 0.629∗ | 1 | |||
| Mn | 0.552∗ | 0.181 | -0.029 | 1 | ||
| Pb | 0.172 | 0.768∗ | 0.640∗ | -0.092 | 1 | |
| As | -0.138 | -0.044 | 0.309 | -0.121 | -0.006 | 1 |
Correlation is significant at the 0.05 level.
