Critical-to-Quality (CTQ) Tree Calculator
Analyzes whether your CTQ drivers logically fulfill the customer need and your requirements actually measure what you’re claiming
📊 CTQ Tree Alignment Calculator
Validate the logical structure of your Critical-to-Quality tree
🎯 What Does This Calculator Do?
This tool validates the logical alignment of your CTQ tree structure. Instead of just checking if you filled in fields, it analyzes whether your drivers actually support the customer need and whether your CTQ requirements truly measure those drivers.
💡 Why Alignment Matters
A CTQ tree with poor alignment leads to wasted effort measuring the wrong things. If your drivers don't connect to the customer need, or your CTQs don't measure the drivers, your improvement project will miss the mark.
📊 What We Calculate
Driver Alignment
Do your drivers logically support the customer need? We analyze keyword relevance and semantic connections.
CTQ Measurement Validity
Do your CTQ requirements actually measure what the driver states? Are they specific and measurable?
Coverage Completeness
Do your drivers comprehensively cover the customer need, or are there gaps in your logic?
Overall Quality Score
Combined assessment of alignment, coverage, and specificity across your entire tree.
✅ Good vs ❌ Poor Alignment Examples
Example 1: Fast Delivery
✅ Well-Aligned Driver
Customer Need: Fast delivery
Driver: Order processing speed
Why it works: "Processing speed" directly impacts delivery speed - clear logical connection.
❌ Poorly-Aligned Driver
Customer Need: Fast delivery
Driver: Employee satisfaction
Why it fails: While satisfied employees might help indirectly, there's no direct connection to delivery speed.
Example 2: High Quality Product
✅ Well-Aligned CTQ
Driver: Product durability
CTQ Requirement: Mean time to failure ≥ 10,000 hours
Why it works: Time to failure directly measures durability - perfect match.
❌ Poorly-Aligned CTQ
Driver: Product durability
CTQ Requirement: Customer satisfaction score ≥ 4.0
Why it fails: Satisfaction is too broad and doesn't specifically measure durability.
🚀 How to Use This Calculator
Step 1: Define Customer Need
Enter the high-level customer requirement clearly and specifically.
Step 2: Add Drivers
List 3-5 critical needs that directly support the customer need. Think: "If we improve this driver, will it directly improve the customer need?"
Step 3: Define CTQ Requirements
For each driver, add specific, measurable requirements that quantify the driver's performance.
Step 4: Analyze Alignment
Click "Analyze CTQ Alignment" to see how well your tree structure holds together logically.
✨ Pro Tips
Use Related Keywords: Good alignment often shares keywords or related concepts across levels.
Test the Logic: Ask "If I improve this driver, does it fulfill the customer need?" and "Does this CTQ measure the driver?"
Avoid Vague Terms: Words like "better," "improve," or "quality" without specifics weaken alignment.
📋 Load Sample Data (Good vs Poor Examples):
Critical Drivers
📈 CTQ Tree Alignment Analysis
Build your CTQ tree in the Calculator tab to see results
Navigate to the Calculator tab and complete your CTQ tree, then click "Analyze CTQ Alignment" to see how well your structure holds together logically.
