D. Risk and control Flashcards
what is the difference between risk and uncertainty?
risk is quantifiable, possible outcomes have associated probabilities and allow the use of mathematical techniques
uncertainty is unquantifiable and the outcome can’t be mathematically modelled. It is difficult to incorporate uncertainty into decision making models
what is upside risk and downside risk?
downside: bad
upside: rewards better than risks
how do we deal with risks in investment appraisal?
-add RISK PREMIUM to the discount rate to compensate for risk
-use PAYBACK period technique
sensitivity analysis
-using probability distributions to give an indication of risk
-Monte Carlo simulation-computerised system that extends sensitivity analysis
how is sensitivity margin calculated?
NPV/PV of flow under consideration
what is sensitivity analysis?
a ‘what if’ analysis
-see how much leeway before option becomes unviable
what is the expected value?
all the different possible outcomes by a single weighted average
- long run average
- NOT most likely result
what is a risk neutral decision maker?
consider all possible outcomes and will select the strategy that maximises the EXPECTED VALUE or benefit
what is a risk seeker?
likely to select the strategy with the BEST possible outcomes, regardless of the likelihood that they will occur. They will apply the MAXIMAX criteria
what is a risk averse decision maker?
try to AVOID RISK. Rather select a lower but certain outcome than risk going for a higher pay-off which is less certain to occur. They will apply the MAXIMIN criterion or the minimax regret approach
what are the advantages of using expected value?
- takes risk into account
- easier decisions as single figure
- simple to calculate
what are the disadvantaged of using expected value?
- probabilities are subjective
- little meaning for a one-off project
- ignores attitudes to risk
- the answer may not exist
what is standard deviation?
measure of how far away on average the data points are from the means
- average variability about the mean
- measure of VOLATILITY
what are the steps to calculating standard deviation?
- find the difference for each data value and mean
- square differences to get rid of negative differences
- work out the average squared difference (i.e variance)
- take the square root to get the standard deviation
what is the Monte Carlo simulation?
computerised system that extends sensitivity analysis
what is the Monte Carlo simulation method?
uses random numbers and probability statistics
- identify key variables in a decision
- assign random numbers to each variable in a proportion in accordance with the underlying probability distribution
- use a computer to repeat decision repeatedly until outcome starts to ‘settle down’ and gives management a view of the likely range and level of outcomes
- depending on the management’s attitude to risk, a more informed decision can be taken
what is VaR?
value at risk
- measure of how the market value of an asset or of a portfolio of assets is likely to decrease over a certain time, the HOLDING PERIOD (usually one to ten days) under ‘normal’ market conditions
- amount of risk to be lost from an investment under usual conditions over a given holding period at a particular ‘confidence level’
what is VaR measured by?
normal distribution theory
-typically used by IBs to measure market risk of their asset portfolios
what does a 95% confidence level mean in VaR?
For a 95% confidence level, the VaP will give the amount that has a 5% chance of being lost
what does a payoff table show?
illustrates al the different possible profits/losses that might arise
what are the 2 axis of a payoff table?
demand and supply
what are the probabilities in payoff tables used to calulcate?
expected values which are then used for decision making
what is perfect information?
forecast of future outcome is always the correct prediction
-can undertake the most beneficial course of action
what is imperfect information?
forecast is usually correct, but can be incorrect
-not as valuable as perfect information
what is a decision tree?
diagrammatic representation of a multi-decision problem, where all possible courses of action are represented and every possible outcome of each course of action is shown
when should a decision tree be used?
where a problem involves a series of decisions being made and several outcomes arise during the decision-making process
what are some common symbols in a decision tree?
square=decision point
circle=chance point
branch=probability
how are probabilities of outcomes calculated in a decision tree?
‘roll back’ from end to circle/decision point
what is a conditional probability?
probability of an event whose calculation is based on the knowledge that some other even has occured
what does P(A/b) mean?
the probability of A occurring given that B has already occured
how are contingency tables created?
by taking the given probabilities, multiplying by some convenient number then drawing a table to show the various combinations of factors that may exist
what is a stress test?
a way of analysing a business to consider how well it could cope in difficult conditions
-assess the vulnerability of a position against hypothetical events
what needs to be considered when stress testing?
prioritisation
measurement
productivity
flexibility
what is scenario planning?
force managers to think about other potential future market positions
-identify key environmental factors and consider how these might change in the future
what is risk in business?
the chance that future events or results may not be as expected
what is purely bad risk known as?
pure or downside risk
what is good risk known as?
speculative or upside risk
why incur risk?
- to generate higher returns, a business may have to take more risk in order to be competitive. Conversely, not accepting risk tends to make a business less dynamic, an implies a ‘follow the leader’ strategy
- incurring risk also implies that the returns from different activities will be higher -‘benefit’ being the return for accepting risk
- benefits can be financial
- in both cases, these will lead to the business being able to gain competitive advantage
what are the different categories of risk?
- political, legal and regulatory
- business risk
- economic risk
- financial risk
- technology risk
- environmental risk
- corporate reputation risk
- fraud and employee malfeasance risk
- international risk
what is business risk?
the risk businesses face due to the nature of their operations and products
what is strategic risk?
risk that business strategies will fail
what is product risk?
risk of failure of new product launches/loss of interest in existing products
what is commodity price risk?
risk of a rise in commodity prices
what is product reputation risk?
risk of change in products’ reputation or image
what is operational risk?
risk that business operations may be inefficient or business processes may fail
what is contractual inadequacy risk?
risk that the terms of a contract do not fully cover a business against all potential outcomes
what is fraud and employee malfeasance risk?
malfeasance means doing wrong, or committing an offence or fraud. this is the risk of actions by employees that result in fraud, an offence or crime
what is risk management?
‘the process of understanding and managing the risks that the organisation is inevitably subject to in attempting to achieve its corporate objectives’
what are the 2 sides to risk management?
conformance and performance
what is conformance?
controlling threats or hazards
-‘bad things do happen’
what is performance?
maximising return or opportunity
-‘good things might not happen’
what is risk appetite?
the amount of risk an organisation is willing to accept in pursuit of value
-may be explicit in strategies, policies and procedures, or it may be implicit
what is risk appetite determined by?
- risk capacity
- risk attitude
what is the TARA framework?
probability on y axis and impact on x
-transfer, accept, reduce and avoid