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- NIST/ITL StRD
- Dataset Name: Chwirut2 (Chwirut2.dat)
- File Format: ASCII
- Starting Values (lines 41 to 43)
- Certified Values (lines 41 to 48)
- Data (lines 61 to 114)
- Procedure: Nonlinear Least Squares Regression
- Description: These data are the result of a NIST study involving
- ultrasonic calibration. The response variable is
- ultrasonic response, and the predictor variable is
- metal distance.
- Reference: Chwirut, D., NIST (197?).
- Ultrasonic Reference Block Study.
- Data: 1 Response (y = ultrasonic response)
- 1 Predictor (x = metal distance)
- 54 Observations
- Lower Level of Difficulty
- Observed Data
- Model: Exponential Class
- 3 Parameters (b1 to b3)
- y = exp(-b1*x)/(b2+b3*x) + e
- Starting values Certified Values
- Start 1 Start 2 Parameter Standard Deviation
- b1 = 0.1 0.15 1.6657666537E-01 3.8303286810E-02
- b2 = 0.01 0.008 5.1653291286E-03 6.6621605126E-04
- b3 = 0.02 0.010 1.2150007096E-02 1.5304234767E-03
- Residual Sum of Squares: 5.1304802941E+02
- Residual Standard Deviation: 3.1717133040E+00
- Degrees of Freedom: 51
- Number of Observations: 54
-
- Data: y x
- 92.9000E0 0.500E0
- 57.1000E0 1.000E0
- 31.0500E0 1.750E0
- 11.5875E0 3.750E0
- 8.0250E0 5.750E0
- 63.6000E0 0.875E0
- 21.4000E0 2.250E0
- 14.2500E0 3.250E0
- 8.4750E0 5.250E0
- 63.8000E0 0.750E0
- 26.8000E0 1.750E0
- 16.4625E0 2.750E0
- 7.1250E0 4.750E0
- 67.3000E0 0.625E0
- 41.0000E0 1.250E0
- 21.1500E0 2.250E0
- 8.1750E0 4.250E0
- 81.5000E0 .500E0
- 13.1200E0 3.000E0
- 59.9000E0 .750E0
- 14.6200E0 3.000E0
- 32.9000E0 1.500E0
- 5.4400E0 6.000E0
- 12.5600E0 3.000E0
- 5.4400E0 6.000E0
- 32.0000E0 1.500E0
- 13.9500E0 3.000E0
- 75.8000E0 .500E0
- 20.0000E0 2.000E0
- 10.4200E0 4.000E0
- 59.5000E0 .750E0
- 21.6700E0 2.000E0
- 8.5500E0 5.000E0
- 62.0000E0 .750E0
- 20.2000E0 2.250E0
- 7.7600E0 3.750E0
- 3.7500E0 5.750E0
- 11.8100E0 3.000E0
- 54.7000E0 .750E0
- 23.7000E0 2.500E0
- 11.5500E0 4.000E0
- 61.3000E0 .750E0
- 17.7000E0 2.500E0
- 8.7400E0 4.000E0
- 59.2000E0 .750E0
- 16.3000E0 2.500E0
- 8.6200E0 4.000E0
- 81.0000E0 .500E0
- 4.8700E0 6.000E0
- 14.6200E0 3.000E0
- 81.7000E0 .500E0
- 17.1700E0 2.750E0
- 81.3000E0 .500E0
- 28.9000E0 1.750E0
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