Local influence regression diagnostics for gamma data

Abstract

The local influence diagnostics proposed in general terms irl Cook (1986), Thomas and Cook (1989) and Billor and Loynes (1993). arc adapted for gamma data. A data set prcviously analysed using different methods is then reexamined, and conclusions based on wing the new approach are made.

Keywords:

• response
• explanatory variables
• case-weights
• perturbation