No CrossRef data available.
Published online by Cambridge University Press: 01 October 2003
A concise derivation of the Wallace and Hussain fixed effects transformation.
Consider the panel regression model with two-way error component disturbances defined by

Wallace and Hussain (1969) derive the fixed effects transformation for this model by “trial error and generalization.” Use the Frisch–Waugh–Lovell theorem described in Davidson and MacKinnon (1993, p. 19) to obtain a concise derivation of this Within transformation.