1. Chapter 1

2. Learning Objectives
After completing this chapter, you should be able to:
Describe the importance of management science.
Describe the advantages of a quantitative approach to problem solving.
List some of the applications and use of management science models.
Discuss the types of models most useful in management science.
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3. Learning Objectives (cont’d)
After completing this chapter, you should be able to:
5. Describe the basic nature and usefulness of break-even analysis.
List and briefly explain each of the components of break-even analysis.
Solve typical break-even problems manually and with Excel.
Copyright © 2007 The McGraw-Hill Companies. All rights reserved.

4. The Importance of Management Science
The discipline of applying advanced analytical methods to help make better decisions.
Devoted to solving managerial-type problems using quantitative models
Applications of management science
Forecasting, capital budgeting, portfolio analysis, capacity planning, scheduling, marketing, inventory management, project management, and production planning.
Copyright © 2007 The McGraw-Hill Companies. All rights reserved.

5. Table 1–2 Successful Applications of Management Science
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6. Table 1–2 Successful Applications of Management Science (cont’d)
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7. Problem Solving Approaches
Managers tend to use a qualitative approach to problem solving when
The problem is fairly simple.
The problem is familiar.
The costs involved are not great.
Managers tend to use a quantitative approach when
The problem is complex.
The problem is not familiar.
The costs involved are substantial.
Enough time is available to analyze the problem.
Copyright © 2007 The McGraw-Hill Companies. All rights reserved.

8. Advantages of the Quantitative Approach
Directs attention to the essence of an analysis: to solve a specific problem.
Improves planning which helps prevent future problems
Results in more objective decisions than purely qualitative analysis.
Incorporates advances in computational technologies to managerial problem-solving.
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9. Models A Model Symbolic models Mathematical models
An abstraction of reality. It is a simplified, and often idealized, representation of reality.
Examples : an equation, an outline, a diagram, and a map
By its very nature a model is incomplete.
Provides an alternative to working with reality
Symbolic models
Use numbers and algebraic symbols
Mathematical models
Decision variables
Uncontrollable variables
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10. Deterministic versus Probabilistic Models
Deterministic models
Used for problems in which information is known with a high degree of certainty.
Used to determine an optimal solution to the problem.
Probabilistic models
Used when it cannot be determined precisely what values (requiring probabilities) will occur (usually in the future).
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11. Figure 1–1 The Management Science Approach
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12. Figure 1–2 DSS Framework
Source: E. Turban, Jay Aronson, and Ting-Peng Liang, Decision Support Systems and Intelligence Systems, 7th ed. (Upper Saddle River, NJ: Prentice Hall, 2005), p. 109.
Copyright © 2007 The McGraw-Hill Companies. All rights reserved.

13. Breakeven Analysis Breakeven analysis (cost-volume analysis)
Is concerned with the interrelationship of costs, volume (quantity of output or sales), and profit.
The Break-Even Point (BEP)
The volume for which total revenue and total cost are equal.
The dividing line between profit and loss; sales higher than the break-even point will result in a profit, while sales that is lower than the break-even point will result in a loss.
Where you get “out of the red.”
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14. Breakeven Analysis Breakeven analysis (cost-volume analysis)
Is concerned with the interrelationship of costs, volume (quantity of output or sales), and profit.
Components of Break-Even Analysis
Volume: the level of output of a machine, department, or organization, or the quantity of sales.
Revenue: the income generated by the sale of a product. Total revenue = revenue per unit (selling price per unit) multiplied by units (volume) sold.
Costs: costs that must be taken into account
Fixed costs are not related to the volume of output.
Variable costs increase and decrease with output.
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15. Assumptions of Break-Even Analysis
The revenue per unit is the same for all volumes.
The variable cost per unit is the same for all volumes.
Fixed cost is the same for all levels of volume.
Only one product is involved.
All output is sold.
All relevant costs are accounted for, and correctly assigned to either the fixed cost category or the variable cost category.
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16. Figure 1–3 Total Revenue Increases Linearly as Volume Increases
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17. Figure 1–4 Fixed Costs
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18. Figure 1–5 Total Variable Cost
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19. Figure 1–6 Total Cost
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20. Figure 1–7 Profit and the Break-Even Point
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21. Example 1–1
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22. Exhibit 1–4 Break-Even Analysis
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