| Serial no. | Mn(vii) : Mn(ii) | Mn, taken (μg L−1) | Mn, found (μg L−1) | Error (μg L−1) | |||
|---|---|---|---|---|---|---|---|
| Mn(vii) | Mn(ii) | Mn(vii) | Mn(ii) | Mn(vii) | Mn(ii) | ||
| 1 | 1 : 1 | 10 | 10 | 9.98 | 9.99 | 0.02 | 0.01 |
| 1 | 1 : 1 | 10 | 10 | 10.00 | 10.02 | 0.00 | 0.02 |
| 1 | 1 : 1 | 10 | 10 | 9.97 | 9.98 | 0.03 | 0.02 |
| Mean error: Mn(vii) = ±0.017; Mn(ii) = ±0.017 | |||||||
| Standard deviation: Mn(vii) = ±0.012; Mn(ii) = ±0.011 | |||||||
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