Chapter 13 Risk Analysis Dr Loizos Christou. Risk and Uncertainty Risk –Situation where there is more than one possible outcome to a decision and the.

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Presentation transcript:

Chapter 13 Risk Analysis Dr Loizos Christou

Risk and Uncertainty Risk –Situation where there is more than one possible outcome to a decision and the probability of each outcome is known Uncertainty –Situation where there is more than one possible outcome to a decision and the probability of each outcome is unknown

Measuring Risk Probability Distributions Probability –Chance that an event will occur Probability Distribution –List of all possible events and the probability that each will occur Expected Value or Expected Profit

Measuring Risk Probability Distributions Calculation of Expected Profit

Measuring Risk Probability Distributions Discrete Probability Distribution –List of individual events and their probabilities –Represented by a bar chart or histogram Continuous Probability Distribution –Continuous range of events and their probabilities –Represented by a smooth curve

Measuring Risk Probability Distributions Discrete Probability Distributions Project A; E(  ) = 500, Low RiskProject B: E(  ) = 500, High Risk

Measuring Risk Probability Distributions Continuous Probability Distributions Project A: E(  ) = 500, Low RiskProject B: E(  ) = 500, High Risk

Measuring Risk Probability Distributions An Absolute Measure of Risk: The Standard Deviation

Measuring Risk Probability Distributions Calculation of the Standard Deviation Project A

Measuring Risk Probability Distributions Calculation of the Standard Deviation Project B

Measuring Risk Probability Distributions The Normal Distribution

Measuring Risk Probability Distributions A Relative Measure of Risk: The Coefficient of Variation Project AProject B

Utility Theory Risk Averse –Must be compensated for taking on risk –Diminishing marginal utility of money Risk Neutral –Are indifferent to risk –Constant marginal utility of money Risk Seeking –Prefer to take on risk –Increasing marginal utility of money

Utility Theory

Utility Function of a Risk Averse Manager

Value of the Firm = Net Present Value Risk-Adjusted Discount Rate Adjusting Value for Risk

Certainty Equivalent Approach Certainty Equivalent Coefficient

Other Techniques Decision Trees –Sequence of possible managerial decisions and their expected outcomes –Conditional probabilities Simulation –Sensitivity analysis

Uncertainty Maximin Criterion –Determine worst possible outcome for each strategy –Select the strategy that yields the best of the worst outcomes

Uncertainty: Maximin The payoff matrix below shows the payoffs from two states of nature and two strategies.

Uncertainty: Maximin The payoff matrix below shows the payoffs from two states of nature and two strategies. For the strategy “Invest” the worst outcome is a loss of 10,000. For the strategy “Do Not Invest” the worst outcome is 0. The maximin strategy is the best of the two worst outcomes - Do Not Invest.

Uncertainty: Minimax Regret The payoff matrix below shows the payoffs from two states of nature and two strategies.

Prepared by Robert F. Brooker, Ph.D. Copyright ©2004 by South-Western, a division of Thomson Learning. All rights reserved.Slide 25 Uncertainty: Minimax Regret The regret matrix represents the difference between the a given strategy and the payoff of the best strategy under the same state of nature.

Uncertainty: Minimax Regret For each strategy, the maximum regret is identified. The minimax regret strategy is the one that results in the minimum value of the maximum regret.

Uncertainty: Informal Methods Gather Additional Information Request the Opinion of an Authority Control the Business Environment Diversification

Foreign-Exchange Risk Foreign-Exchange Rate –Price of a unit of a foreign currency in terms of domestic currency Hedging –Covering foreign exchange risk –Typically uses forward currency contracts

Foreign-Exchange Risk Forward Contract –Agreement to purchase or sell a specific amount of a foreign currency at a rate specified today for delivery at a specified future date. Futures Contract –Standardized, and more liquid, type of forward contract for predetermined quantities of the currency and selected calendar dates.

Information and Risk Asymmetric Information –Situation in which one party to a transaction has less information than the other with regard to the quality of a good Adverse Selection –Problem that arises from asymmetric information –Low-quality goods drive high-quality goods out of the market

Information and Risk Moral Hazard –Tendency for the probability of loss to increase when the loss is insured Methods of Reducing Moral Hazard –Specifying precautions as a condition for obtaining insurance –Coinsurance