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   y vs. x
Dataset
Name:
Kirby2

Procedure: Nonlinear Least Squares Regression
Certification Method & Definitions

Data: 1 Response Variable (y)
1 Predictor Variable (x)
151 Observations
Average Level of Difficulty
Observed Data
Data file (ASCII Format)
Additional Information

Model: Rational Class
5 Parameters (beta(1) to beta(5) to beta(1) to beta(5))
Starting Values

y = f(x;beta) + e = (beta(1) + beta(2)x + beta(3)x^2) / (1 + beta(4)x + beta(5)x^2)

Results: Certified Values
Graphics

Reference: Kirby, R., NIST (1979).
Scanning electron microscope line width standards.