JSM 2004 - Toronto

Abstract #300948

This is the preliminary program for the 2004 Joint Statistical Meetings in Toronto, Canada. Currently included in this program is the "technical" program, schedule of invited, topic contributed, regular contributed and poster sessions; Continuing Education courses (August 7-10, 2004); and Committee and Business Meetings. This on-line program will be updated frequently to reflect the most current revisions.

To View the Program:
You may choose to view all activities of the program or just parts of it at any one time. All activities are arranged by date and time.

The views expressed here are those of the individual authors
and not necessarily those of the ASA or its board, officers, or staff.

Back to main JSM 2004 Program page
Activity Number: 337
Type: Contributed
Date/Time: Wednesday, August 11, 2004 : 10:30 AM to 12:20 PM
Sponsor: Section on Physical and Engineering Sciences
Abstract - #300948
Title: Comparison of Designs Using Change of Variance Functions for Measuring Possible Correlation Effects
Author(s): Yun Shen*+ and Subir Ghosh
Companies: University of California, Riverside and University of California, Riverside
Address: Apt309, 3275 s Sepulveda Blvd, Los Angeles, CA, 90034,
Keywords: correlation ; design ; linear model ; optimality ; ordinary least squares estimator ; precision
Abstract:

Zhou (2001) introduced a change of variance function for a linear function of parameters in the standard linear model when there may be some possible correlation present in observations. In this paper we propose four additional changes of variance functions for the same purpose. The change of variance functions are used for measuring the possible correlation effected in the variance-covariance matrix of the estimated parameters. We also use them for the comparison of designs. We find a design by minimizing one of our proposed changes of variance functions in a simple response surface setup. We then compare its performance with all variance design, all bias design, and the design making the average variance equal to the average squared bias.

  • The address information is for the authors that have a + after their name.
  • Authors who are presenting talks have a * after their name.

Back to the full JSM 2004 program

JSM 2004 For information, contact jsm@amstat.org or phone (888) 231-3473. If you have questions about the Continuing Education program, please contact the Education Department.
Revised March 2004