variance-analysis-concept
Sub-skill of variance-analysis: Concept (+4).
Best use case
variance-analysis-concept is best used when you need a repeatable AI agent workflow instead of a one-off prompt.
Sub-skill of variance-analysis: Concept (+4).
Teams using variance-analysis-concept should expect a more consistent output, faster repeated execution, less prompt rewriting.
When to use this skill
- You want a reusable workflow that can be run more than once with consistent structure.
When not to use this skill
- You only need a quick one-off answer and do not need a reusable workflow.
- You cannot install or maintain the underlying files, dependencies, or repository context.
Installation
Claude Code / Cursor / Codex
Manual Installation
- Download SKILL.md from GitHub
- Place it in
.claude/skills/concept/SKILL.mdinside your project - Restart your AI agent — it will auto-discover the skill
How variance-analysis-concept Compares
| Feature / Agent | variance-analysis-concept | Standard Approach |
|---|---|---|
| Platform Support | Not specified | Limited / Varies |
| Context Awareness | High | Baseline |
| Installation Complexity | Unknown | N/A |
Frequently Asked Questions
What does this skill do?
Sub-skill of variance-analysis: Concept (+4).
Where can I find the source code?
You can find the source code on GitHub using the link provided at the top of the page.
SKILL.md Source
# Concept (+4) ## Concept A waterfall (or bridge) chart shows how you get from one value to another through a series of positive and negative contributors. Used to visualize variance decomposition. ## Data Structure ``` Starting value: [Base/Budget/Prior period amount] Drivers: [List of contributing factors with signed amounts] Ending value: [Actual/Current period amount] Verification: Starting value + Sum of all drivers = Ending value ``` ## Text-Based Waterfall Format When a charting tool is not available, present as a text waterfall: ``` WATERFALL: Revenue — Q4 Actual vs Q4 Budget Q4 Budget Revenue $10,000K | |--[+] Volume growth (new customers) +$800K |--[+] Expansion revenue (existing customers) +$400K |--[-] Price reductions / discounting -$200K |--[-] Churn / contraction -$350K |--[+] FX tailwind +$50K |--[-] Timing (deals slipped to Q1) -$150K | Q4 Actual Revenue $10,550K Net Variance: +$550K (+5.5% favorable) ``` ## Bridge Reconciliation Table Complement the waterfall with a reconciliation table: | Driver | Amount | % of Variance | Cumulative | |--------|--------|---------------|------------| | Volume growth | +$800K | 145% | +$800K | | Expansion revenue | +$400K | 73% | +$1,200K | | Price reductions | -$200K | -36% | +$1,000K | | Churn / contraction | -$350K | -64% | +$650K | | FX tailwind | +$50K | 9% | +$700K | | Timing (deal slippage) | -$150K | -27% | +$550K | | **Total variance** | **+$550K** | **100%** | | *Note: Percentages can exceed 100% for individual drivers when there are offsetting items.* ## Waterfall Best Practices 1. Order drivers from largest positive to largest negative (or in logical business sequence) 2. Keep to 5-8 drivers maximum — aggregate smaller items into "Other" 3. Verify the waterfall reconciles (start + drivers = end) 4. Color-code: green for favorable, red for unfavorable (in visual charts) 5. Label each bar with both the amount and a brief description 6. Include a "Total Variance" summary bar
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