information systems

See pages 39 and 40 of the notes. MIS: example is when a system reports variances. There are specific ways in which the calculations are performed and the variances pro ide information for managers. EIS: example is a spreadsheet used to create budgets. There is no correct budget but the system allows managers/executives to play around with different assumptions, eg feeding in estimates of inflation, exchange rates and interest rates. Managers have to decide which combinations of assumptions are the most likely.