Lesson 5 - Utility & Decision Making Flashcards
When do you use Utility in decision making?
When expected monetary value approach does not lead to the most preferred decision alternative, use utility to arrive at a decision.
Utility
A measure of the total worth of an outcome. It reflects decision maker’s attitude towards profit, loss, and risk.
*Utility is a useful measure of how an individual decision maker views the value to him of an alternative at a given point in time. This same individual may have a
When expected payoffs become extreme…
most decision makers are not comfortable with the decision that simply provides highest monetary expected value.
Expected Utility
Provides a tool that the decision maker can use in any situation where risk is an important consideration.
If decision involves considerable risk…
Best tool to use is Expected Utility concept, otherwise, Expected value approach is a more useful tool.
Risk Avoider
Graph: Curve is convex –> it bends down at the top.
Utility function for a risk avoider shows a diminishing marginal return
Risk Taker
Graph: Curve is concave –> it bends upwards at an increasing rate.
Utility function of a risk taker shows an increasing marginal return for money.