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- NIST/ITL StRD
- Dataset Name: BoxBOD (BoxBOD.dat)
- File Format: ASCII
- Starting Values (lines 41 to 42)
- Certified Values (lines 41 to 47)
- Data (lines 61 to 66)
- Procedure: Nonlinear Least Squares Regression
- Description: These data are described in detail in Box, Hunter and
- Hunter (1978). The response variable is biochemical
- oxygen demand (BOD) in mg/l, and the predictor
- variable is incubation time in days.
- Reference: Box, G. P., W. G. Hunter, and J. S. Hunter (1978).
- Statistics for Experimenters.
- New York, NY: Wiley, pp. 483-487.
- Data: 1 Response (y = biochemical oxygen demand)
- 1 Predictor (x = incubation time)
- 6 Observations
- Higher Level of Difficulty
- Observed Data
- Model: Exponential Class
- 2 Parameters (b1 and b2)
- y = b1*(1-exp[-b2*x]) + e
-
- Starting values Certified Values
- Start 1 Start 2 Parameter Standard Deviation
- b1 = 1 100 2.1380940889E+02 1.2354515176E+01
- b2 = 1 0.75 5.4723748542E-01 1.0455993237E-01
- Residual Sum of Squares: 1.1680088766E+03
- Residual Standard Deviation: 1.7088072423E+01
- Degrees of Freedom: 4
- Number of Observations: 6
- Data: y x
- 109 1
- 149 2
- 149 3
- 191 5
- 213 7
- 224 10
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