Q1. [1] § Assertion and reasoning-based questions § Case study-based questions
Which of the following scenarios might have a high False Negative (FN) cost ?
- (A) Viral Disease Outbreak
- (B) Spam
- (C) Mining
- (D) Image Search
Previously asked in CBSE board exam
2024 104 Q5 (v)
Generated by claude-sonnet-4-6 · 2026-06-21 03:19 · grounding rag
Model Answer
(A) Viral Disease Outbreak
A viral disease outbreak has a high FN cost because missing an infected person (predicting negative when actually positive) can lead to undetected spread of disease, causing serious public health consequences.
Explanation
- False Negative (FN) = model predicts "No Disease/No Risk" but the actual case IS positive.
- In a viral outbreak, failing to identify an infected person is extremely dangerous (they spread the disease further), so FN cost is very high — Recall matters most here.
- Spam (FP cost is higher), Mining and Image Search are not life-critical, so FN cost is comparatively low.
- Examiners expect you to correctly identify the option and give a one-line justification.
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