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  1. Describe the pure play and the accounting beta methods for estimating individual project’s betas.

A pure play is a company that invests its resources in only one line of business. As such, this type of stock has a performance that correlates highly to the performance of the stock's particular industry. For example, many electronic retailers or "e-tailers" are pure plays. All they do is sell one particular type of product over the internet. Therefore, if internet buying declines even slightly, these companies are negatively affected. An accounting beta method – a method of estimating a project’s beta by running a regression of the company’s return on assets against the average return on assets for a large sample of firms. Accounting betas for a totally new project can be calculated only after the project has been accepted, placed in operation, and begun to generate output and accounting results—too late for the capital budgeting decision.

  1. Identify some problem areas in cost of capital analysis. Explain how they invalidate the cost of capital procedures.

Depreciation-generated funds In brief, depreciation cash flows can either be reinvested or returned to investors (stockholders and creditors). The cost of depreciation-generated funds is approximately equal to the weighted average cost of capital from retained earnings and low-cost debt.

Privately owned firms there is a serious question about how one should measure the cost of equity for a firm whose stock is not traded. Tax issues are also especially important in these cases. As a general rule, the same principles of cost of capital estimation apply to both privately held and publicly owned firms, but the problems of obtaining input data are somewhat different for each.

Small business Small businesses are generally privately owned, making it difficult to estimate their cost of equity

Measurement problems One cannot overemphasize the practical difficulties encountered when estimating the cost of equity. It is very difficult to obtain good input data for the CAPM, for g in the formula ks =D1/P0+g, and for the risk premium in the formula ks = Bond yield + Risk premium. As a result, we can never be sure just how accurate our estimated cost of capital is.

Costs of capital for projects of differing riskiness It is difficult to measure projects’ risks, hence to assign risk-adjusted discount rates to capital budgeting projects of differing degrees of riskiness.

Capital structure weights the state of the art in cost of capital estimation is really not in bad shape. The procedures outlined in this chapter can be used to obtain cost of capital estimates that are sufficiently accurate for practical purposes, and the problems listed here merely indicate the desirability of refinements. The refinements are not unimportant, but the problems we have identified do not invalidate the usefulness of the procedures outlined in the chapter.

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