Considerations for Risk Matrices

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Risk matrices are tools that allow the categorization of risk using either a two, three, or four dimensional risk scoring system. Although risk assessments remain to be the most systematic and effective methods of identifying risks and determining the best methods in minimizing or removing them they are still subjective even when risk assessments are presented in an objective manner that are often based on assumptions which are subjective themselves. Nonetheless, they are an essential part of any risk management program which incorporates the processes of risk analysis and risk evaluation by separating risk that is unacceptable from those that are acceptable, but no matter what type of matric is used, risks should always be evaluated in a consistent manner. When conducting risk assessments, they are analyzed by combining estimates of severity (consequence or outcome) with the probability (frequency or likelihood) of occurrence such as in the two dimensional risk scoring system. The simplest of the three different scoring systems, the two dimensional scoring system can be further clar...

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