You Are Assigned to a Team Responsible for Evaluating Segment

Essay

You are assigned to a team responsible for evaluating segment managers' performance measures.A team member has indicated that a friend who is a manager at a competitor's company is evaluated using "ROI",but does not know what "ROI" is.
a.Explain what ROI is and why it is a useful tool in measuring managers' performance.
b.Give an example of when ROI would not be an appropriate performance measurement.