Model Form #1
log10(ECB) =
2.34 + 0.03 TEMP
+ 0.66 log10(TURB)
where:
- ECB is computed e. coli, in most probable number
- TEMP is water temperature, in degrees Celsius
- TURB is turbidity, in formazin nephelometric units
Model Calibration
Basic Data
| Number of measurements: | 157 |
|---|---|
| Mean squared error: | 0.2916 |
| Multiple R2: | 0.45 |
| Bias correction (smearing) factor: | 2.33 |
Explanatory Variables
| Variable | Value | Standard error |
|---|---|---|
| Intercept | 2.34 | 0.14 | TEMP | 0.03 | 0.01 | log10(TURB) | 0.66 | 0.08 |
Correlation Matrix
| Intercept | TEMP | log10(TURB) | |
|---|---|---|---|
| Intercept | 1 | -0.37 | -0.727 |
| TEMP | -0.37 | 1 | -0.299 |
| log10(TURB) | -0.727 | -0.299 | 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