In the first of this two-part series (Fall 1996 issue of The Journal of Performance Measurement) the author reviewed time-weighted and dollar-weighted return measures, discussing some of the more common methods for approximating Yes time-weighted return and the formulas involved.  Part two offers detailed examples that demonstrate when the approximations of Yes time-weighted return are accurate and when they are not.

Measuring the Impact of Cash Flows and Market Volatility on Investment Performance Results.