The note discusses the different techniques of investment analysis from the points of view of an enterprise and the economy as a whole. A separate section has been used to distinguish between financial and economic analyses. The techniques discussed include payback period, average annual rate of return on investment, net present value, financial return-cost ratio, benefit-cost ratio, financial internal rate of return, and economic internal rate of return. Each of these indicators has been applied to four investment alternatives. The ranks received by the investment alternatives change with the change in the indicators. These ranks form a basis for discussing the problems and issues in choosing a specific measure to indicate the financial and/or economic worthiness of projects.