30 citations · 43 across the 6 of their papers we have counts for
6 papers
Geometric View of Measurement Errors
Diarmuid O'Driscoll, Donald E. Ramirez
The slope of the best fit line from minimizing the sum of the squared oblique errors is the root of a polynomial of degree four. This geometric view of measurement errors is used t…
Anomalies in the Foundations of Ridge Regression
D. R. Jensen, D. E. Ramirez
Anomalies persist in the foundations of ridge regression as set forth in Hoerl and Kennard (1970) and subsequently. Conventional ridge estimators and their properties do not follow…
Anomalities in the Analysis of Calibrated Data
D. R. Jensen, D. E. Ramirez
This study examines effects of calibration errors on model assumptions and data--analytic tools in direct calibration assays. These effects encompass induced dependencies, inflated…
Minimizing Squared Perpendicular Errors
Donald E. Ramirez
The best fit line from minimizing the sum of the squared perpendicular error is given.
Minimizing Squared Vertical and Squared Horizontal Errors
Donald E. Ramirez
The slope of the best fit line from minimizing the sum of both the squared vertical errors and the squared horizontal errors is shown to be the root of a fourth degree polynomial.
Computation of the Generalized F Distribution
Charles F. Dunkl, Donald E. Ramirez
Exact expressions are given for the distribution function of the ratio of a weighted sum of independent chi-squared variables to a single chi-square variable, scaled appropriately.…