ISACA Certified in Risk and Information Systems Control Practice Mode

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  Formula for Single Loss Expectancy (SLE) = Asset Value (AV) * Exposure Factor (EF) The project has an asset valued at $125,000 and is subjected to an exposure factor of 25 percent. i.e., SLE = Asset Value * Exposure Factor = 125,000 * 0.25 = $31,250 Single Loss Expectancy is a term related to Quantitative Risk Assessment. It can be defined as the monetary value expected from the occurrence of a risk on an asset.