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Ethical Decision-Making

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                                                                                                                     Team Assignment

Decision Support Systems

Sharon Robinson

DBM 410

Decision support Systems


University of Phoenix- Clearwater Campus

Joe Dobrinski, Jr.

May 31, 2005

Workshop #5 Team Assignment

Creating a Decision Support System

Creating a Decision Support System (DSS)

A DSS is an interactive, computer-based system, which has functions for giving a user modeling and data support, which is flexible and adaptable to varying needs in changing environments, with a supportive and easy to use interface, and which has been built to represent the necessary and sufficient problem and knowledge elements of the context it should support (MacDermant, 1998). The ultimate goal of collecting this data is to provide a foundation for business intelligence. Data is drawn from data warehouses, data marts, internal data (generated by business transactions), personal data (individual, subjective estimates, projections, opinions, judgments, etc.), external data (generated outside the organization, but relevant to the organization), economic data (competitive intelligence), and any other data needed for sound decisions. We can collect data manually, by instruments and sensors, scanning, or electronic transfer. The data is transformed into information and knowledge. Data analysis tools are then applied which will augment the decision makers’ judgment with facts, analysis, and forecasts. Practical decision making requires developing man-machine interactive systems.


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 Develop a logical model of the system under a study that describes key events and actions that take place. Visual models provide the basis for implementing the simulation model on a spreadsheet. For systems simulations, the model is usually described with a flowchartSpecify probabilistic assumptions needed to drive the simulation, that is, the probability distributions of input variables. If historical data is available, we can use the empirical distribution to drive the simulation, or fit the data to a theoretical distribution using data fitting techniques. If not, then a distribution must be selected judgmentally. Implement the model on a computer to perform the necessary calculations required to evaluate the distribution of model outputs (Fig. 1). One of the advantages of using spreadsheets is that an experienced spreadsheet user can develop a model rapidly by exploiting the built-in functions and structure of the spreadsheet.



Figure 1:  Spreadsheet model and data table simulation of a newsboy problem

Pivot Tables

        A PivotTable report can help you see the "big picture" by summarizing and analyzing your data. You can control how Excel summarizes the data—for example, by sum, average, or count—without entering a single formula.

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Answers.com, (2005). Scenario Analysis. Retrieved May 29, 2005 from http://www.answers.com/main/ntquery?method=4&dsid=2222&dekey=Scenario+analysis&gwp=8&curtab=2222_1

Decisioneering. (2005). Risk Analysis Overview. Retrieved May 29, 2005 from http://www.decisioneering.com/risk-analysis-model.html

Evans, J. (2000). Spreadsheets as a Tool for Teaching Simulation. Retrieved May 29, 2005 from http://ite.pubs.informs.org/Vol1No1/Evans/index.php

Labovitz, M. (2003). What Is Data Mining and What Are Its Uses? Retrieved May 29, 2005 from http://www.darwinmag.com/read/100103/mining.html

MacDermant, S. (1998). Decision Support Definition – Long. Retrieved May 29, 2005 from http://home.att.net/~seanm/ds/dsslongdef.htm

Moulton. (2005). OLAP and OLAP Server Definitions. Retrieved May 29, 2005 from http://www.moulton.com/olap/olap.glossary.html

O’Donnell, T. (2001). Effective Decision Support Requires a Dynamic Strategy. Retrieved May 29, 2005 from www.ncr.com/repository/brochures/services/Decision_Support_Strategy.pdf

Stoltz, S. (2005). OLAP, an alternative technology over spreadsheets. Retrieved May 29, 2005 from http://www.businessintelligence.com/print_content.asp?code=139&pagenum=1

Wikipedia. (2005). Decision Making. Retrieved May 29, 2005 from http://www.answers.com/library/Wikipedia-cid-1474358484

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