# Critical to Quality (CTQ) Tree
A CTQ tree is a tool that helps translate customer language into quantified requirements for a product or service.
```mermaid
---
title: CTQ Tree Example
---
graph LR
direction LR
subgraph Needs
direction TB
n1[Good Customer Service]
end
subgraph Drivers
direction TB
d1[Knowledgable Reps]
d2[Friendly Reps]
d3[Short Wait]
end
subgraph CTQs
direction TB
c1[Correct Answers]
c2[Quick Answers]
c3[Uses customer's name]
c4[Polite]
c5[Short hold time]
c6[Immediate transfers]
end
n1 --> d1 & d2 & d3
d1 --> c1 & c2
d2 --> c3 & c4
d3 --> c5 & c6
```