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Begin with compatible definitions
Record the common return period, income/currency basis, weights and estimation status. Convert correlation to covariance only after the dispersions share a basis. Use the input worksheet to retain unresolved source questions.
Construct the variance calculation
Complete the own terms and two covariance products, then take the square root. Reproduce the result using squared-unit and return-scale labels. If those conversions disagree, resolve the units before reading the curve.
Add baselines and risk layers
| Task | Evidence of understanding |
|---|---|
| Variance bridge | All three terms and units reconcile |
| Diversification | Comparator explicitly named |
| Euler components | Weight applied after marginal risk |
| Boundary cases | Zero and signed outputs explained |
| Joint matrix | Pair bounds distinguished from coherence |
Use errors to choose the next task
Attempt the two practice sets, retain the reason for any wrong answer and revisit the corresponding example. No universal study-hour allocation or pass prediction follows from completing this sequence. Move to a new estimation record only after you can explain the present model.