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Cyber Security Engineering: A Practical Approach for Systems and Software Assurance by Carol C. Woody, Nancy R. Mead

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Chapter 6. Metrics

6.1 How to Define and Structure Metrics to Manage Cyber Security Engineering

A measure is defined as “an amount or degree of something”; it is an operation for assigning a value to something.1 A metric is defined as “a standard of measurement”; it is the interpretation of assigned values.2 Scientist Lord Kelvin said, “When you can measure what you are speaking about, and express it in numbers, you know something about it; but when you cannot measure it, when you cannot express it in numbers, your knowledge is of a meager and unsatisfactory kind; it may be the beginning ...

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