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Optimal Design in and Hazards of Linearization of Langmuir's Nonlinear Model.

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Harrison, Ferrin; Katti, S. K. – 1990

Langmuir's model is studied for the situation where epsilon is independently and identically normally distributed. The "Y/x" versus "Y" plot had a 90% mid-range that did not contain the true curve in a vast portion of the range of "x". The "1/Y" versus "1/chi" plot had undefined expected values,…

Descriptors: Equations (Mathematics), Estimation (Mathematics), Least Squares Statistics, Mathematical Models

A Comparison of the Log-Linear and Weighted Least Squares Approaches for the Analysis of Categorical Data.

Reshetar, Rosemary A.; Swaminathan, Hariharan – 1992

This study compared the model of J. E. Grizzle, C. F. Starmer, and G. G. Koch (GSK, 1969) and log-linear model-based approaches for testing hypotheses in r x c contingency tables. Tables were simulated under various conditions of table, sample, row-effect size, and column-effect size. Test statistics for column (main) and interaction effects were…

Descriptors: Chi Square, Classification, Comparative Analysis, Effect Size