Model Form #2
log10(FCB) =
1.57 + 0.07 TEMP
+ 0.74 log10(TURB)
where:
- FCB is computed fecal coliform bacteria, in colonies per 100 milliliters
- TEMP is water temperature, in degrees Celsius
- TURB is turbidity, in formazin nephelometric units
Model Calibration
Basic Data
| Number of measurements: | 145 |
|---|---|
| Mean squared error: | 0.3721 |
| Multiple R2: | 0.61 |
| Bias correction (smearing) factor: | 2.08 |
Explanatory Variables
| Variable | Value | Standard error |
|---|---|---|
| Intercept | 1.57 | 0.18 | TEMP | 0.07 | 0.01 | log10(TURB) | 0.74 | 0.11 |
Correlation Matrix
| Intercept | TEMP | log10(TURB) | |
|---|---|---|---|
| Intercept | 1 | -0.13 | -0.827 |
| TEMP | -0.13 | 1 | -0.382 |
| log10(TURB) | -0.827 | -0.382 | 1 |
Reference
- Baldwin, A.K., Robertson, D.M., Saad, D.A., and Magruder, Christopher, 2013, Refinement of regression models to estimate real-time concentrations of contaminants in the Menomonee River drainage basin, southeast Wisconsin, 2008–11: U.S. Geological Survey Scientific Investigations Report 2013-5174, 113 p., seven appendixes