Severity Equation:
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Severity is a measure of the potential consequences of a risk or event, calculated by multiplying its impact by its likelihood of occurrence. It helps prioritize risks and determine appropriate mitigation strategies.
The calculator uses the severity equation:
Where:
Explanation: The equation provides a quantitative measure of risk severity by combining both the potential impact and probability of occurrence.
Details: Calculating severity is crucial for risk management, helping organizations prioritize which risks require immediate attention and resources for mitigation.
Tips: Enter impact as a positive number (typically 0-10 scale) and likelihood as a decimal between 0 (never occurs) and 1 (certain to occur).
Q1: What scales should I use for impact and likelihood?
A: Impact is often scaled 0-10 (0=no impact, 10=catastrophic). Likelihood should be between 0-1 (0%=0, 100%=1).
Q2: How should I interpret the severity score?
A: Higher scores indicate greater risk. Typically: 0-2=low, 3-5=moderate, 6-8=high, 9-10=extreme.
Q3: Can I use different scales?
A: Yes, but ensure consistency across all your risk assessments. The calculator works with any positive numbers.
Q4: What are common applications of severity calculation?
A: Risk management, project planning, safety assessments, cybersecurity, and business continuity planning.
Q5: Should I consider other factors beyond severity?
A: Yes, severity is just one aspect. Also consider risk velocity, detectability, and your organization's risk appetite.