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Annualized loss expectancy : ウィキペディア英語版 | Annualized loss expectancy
The annualized loss expectancy (ALE) is the product of the annual rate of occurrence (ARO) and the single loss expectancy (SLE). It is mathematically expressed as: : Suppose than an asset is valued at $100,000, and the Exposure Factor (EF) for this asset is 25%. The single loss expectancy (SLE) then, is 25% * $100,000, or $25,000. The annualized loss expectancy is the product of the annual rate of occurrence (ARO) and the single loss expectancy. ALE = ARO * SLE For an annual rate of occurrence of one, the annualized loss expectancy is 1 * $25,000, or $25,000. For an ARO of three, the equation is: ALE = 3 * $25,000 Therefore: ALE = $75,000 ==See also==
* Single loss expectancy
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