Risk estimation practice
Compare uncertain options without hiding assumptions or high-impact outcomes.
What you will learn
- Apply quantitative and data literacy to unfamiliar scenarios.
- Explain a conclusion using relevant evidence and constraints.
- Compare your reasoning with structured answer guidance.
This untimed practice set develops quantitative and data literacy. Write a brief reason before opening the guidance. These activities teach transferable reasoning and are not live assessment items.
Practice activities
A system fails in 1 of 200 sessions. Estimate failures across 10,000 similar sessions.
Review answer guidance
The expected count is 10,000 × 1/200 = 50. This is an estimate, not a promise that exactly 50 failures will occur.
A low-probability event would expose personal data. Why is expected financial value insufficient?
Review answer guidance
Privacy duties, legal obligations, irreversible harm and unequal impact cannot be reduced to an average financial amount. Prevention and incident controls remain necessary.
A forecast range is 1,200–1,800 users. How should capacity be planned?
Review answer guidance
Use the service impact of under-capacity, scaling lead time and cost to select a prudent planning point, then define monitoring thresholds that trigger additional capacity.