■ Do these exporters have the environmental information needed to apply the approach, including strategically relevant information related to actual and future rate of market growth, market size, and market share? The analytical procedures used in portfolio analysis can range from simple graphs to the use of calculus or complex mathematical programming. Given international management’s preference for a trade-off between expected return and risk, the end result of the analysis could be a suggested proportion of the total product mix that should be allocated to each product and market in order to achieve efficiency.