#### Definition:

**Within an Value-Decision-Table, for a Specific-Design-Idea (or set of Design-Ideas or Evo-Step), the Sum-of-Costs is the vertical sum of the Percentage-Impacts of selected Scalar Resource Attributes. Sometimes, the numeric average is calculated by dividing the sum by the number of summed Resource Attributes.**

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#### Detailing

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#### Illustrations

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#### Type

#### Examples

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#### Notes

1. This gives a general Idea of the Resource consumption by a Specific-Design-Idea (or set of Design-Ideas or Evo-Step), and can be compared to the performance improvements likely to be obtained.

2. Performance-to-Cost-Ratios can be calculated by dividing the Sum-of-Costs into the Sum-of-Performance.

3. Value-To-Cost-Ratios can be calculated by dividing the Sum-of-Costs into the Value calculated/estimated for Stakeholder value.

4. An alternative to using the Sum-of-Costs in a “ratio” calculation is to use the sum of the absolute financial costs.

#### Keyed-Icons

∑.-O

#### Drawn-Icons

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#### Related-Concepts

• Sum-of-Performance *008

• Performance-to-Cost-Ratio *010

• Value-To-Cost-Ratio *635

#### History-of-Concept

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This Concept entered by Lisa.