Weaver and Michelson (2004) created a simple Excel based model that used discounted cash flow
point estimates to produce a plus or minus range of internal rate of return (IRR) equity values. Similar to
the research in conducted in this paper, they produced a two dimensional matrix of cash flow and
reversion values using heuristic probability distributions around a proposed IRR point estimate. They
also incorporated a non-parametric example that allowed the analyst to vary assumptions from the most
likely scenario. The model was intended to show students the associated risk when forecasting periodic
cash flows and terminal values. By simplifying the view to only year-end cash flows and a reversion
value, the authors were able to focus the discussion of risk on the most basic elements. However, real
world situations rarely allow for such simplification, especially for longer investment horizons.ii