摘要：In this paper we consider the problem of the proper construction of the average rate of return of pension (or investment) funds. We refer to some economical postulates given by Gajek and Kaluszka (2000). We present, discuss and compare several measures of the average rate of return of funds. We also present alternative measures based on original chain indices. We take into consideration discrete and continuous time stochastic models
关键词：Average rate of return; stochastic process; martingale; chain indices
