Department of Statistics Seminar
North Carolina State University

presents

Dr. Geoffrey Vining

Virginia Tech

"An Overview on the Current Work on Industrial Split-Plot Experiments"

ABSTRACT

Many industrial processes involve two types of factors: hard-to-change and easy-to-change, which lead to split-plot structures. This structure results in two different error terms: one at the "whole plot" level and another at the "subplot" level. Split-plot experiments are very common in agriculture. However, agricultural and industrial experiments have distinct but subtle differences. Agricultural experiments tend to focus upon the estimation of contrasts while industrial experiments often focus on the estimation of a response surface.
Of special interest to this talk is the estimation and testing associated with fitting a second-order response surface model. Some of my recent work looks at designs for which the ordinary least squares estimates of the model are equivalent to the generalized least squares estimates, which turns out to lead to interesting results.

Friday, April, 7, 2006

3:35 - 4:35 pm

206 Cox Hall

Refreshments will be served on the second floor of Dabney Hall (left of Room 222) at 3:00 pm.