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How does NIST characterise a qualitative assessment in SP 800-55?

  1. Objective and precise, using values that hold outside the assessment
  2. Subjective and interpretive, working in categories or ratings rather than numbers
  3. Numeric but context-bound, using bins or ranking scales
  4. Statistical, using probability distributions
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Answer: B. Subjective and interpretive, working in categories or ratings rather than numbers

SP 800-55v1 casts qualitative assessment as subjective and interpretive, resting on non-numerical categories — high, medium, low — or on visual devices like heat maps.

Source: NIST SP 800-55 Vol. 1 (NIST) — Sec. 2.2 Types of Assessment

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