Table 7.
Performance of Pearson's correlation coefficient approach.
| Parameter | DO (mg/l) | pH | Conductivity (μS/cm) | BOD (mg/l) | Nitrate (mg/l) | Fecal coliform (MPN/100 ml) | Total coliform (MPN/100 ml) | WQI |
|---|---|---|---|---|---|---|---|---|
| DO (mg/l) | 1.00 | 0.0466 | -0.2914 | -0.1819 | -0.0347 | 0.1128 | -0.1536 | -0.3836 |
| pH | 0.0466 | 1.00 | 0.3268 | 0.2697 | 0.0562 | -0.2082 | -0.2170 | 0.5233 |
| Conductivity (μS/cm) | -0.2914 | 0.3268 | 1.00 | 0.3288 | 0.1009 | -0.1120 | -0.0777 | 0.3935 |
| BOD (mg/l) | -0.1819 | 0.2697 | 0.3288 | 1.00 | 0.2257 | -0.1597 | -0.1633 | 0.6130 |
| Nitrate (mg/l) | -0.0347 | 0.0562 | 0.1009 | 0.2257 | 1.00 | 0.1408 | 0.0545 | 0.1768 |
| Fecal coliform (MPN/100 ml) | -0.1128 | -0.2082 | -0.1120 | -0.1597 | 0.1408 | 1.00 | 0.9119 | 0.2779 |
| Total coliform (MPN/100 ml) | -0.1536 | -0.2170 | -0.0777 | -0.1633 | 0.0545 | 0.9119 | 1.00 | 0.2679 |
| WQI | -0.3836 | 0.5233 | 0.3935 | 0.6130 | 0.1768 | 0.2779 | 0.2679 | 1.00 |