Extending the stochastic approach to index numbers: a comment on Crompton

Abstract

Stochastic approach has received renewed attention in recent years (e.g. Clements and Izan, and Selvanathan and Rao). However, there was some criticism about the form of the error variance used in the new stochastic approach (see work by Diewert). In a recent paper in Applied Economics Letters, Crompton provided a solution to this problem. This article presents some comments and corrections on Crompton's work.