---
title: Interrelationship Diagraph
description: "Some causes drive others. The Interrelationship Diagraph maps the links and shows which cause pulls the most strings. Watch the short video, then work with the toolkit PDF: it explains the method, shows a worked example and gives you a…"
url: "https://skillagility.com/en/resources/interrelationship-diagraph/"
updated: "2026-10-07"
category: 03 ANALYZE
---

# Interrelationship Diagraph

Some causes drive others. The Interrelationship Diagraph maps the links and shows which cause pulls the most strings. Watch the short video, then work with the toolkit PDF: it explains the method, shows a worked example and gives you a blank template to fill in.

Tool video

The short tool video will appear here.

[Interrelationship-Diagraph_Toolkit_EN](https://skillagility.com/wp-content/plugins/embedpress/assets/pdf/web/viewer.html?&file=https%3A%2F%2Fskillagility.com%2Fwp-content%2Fuploads%2F2026%2F10%2FInterrelationship-Diagraph_Toolkit_EN.pdf#key=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)

## Interrelationship Diagraph in short

1. **Place the causes.** 5 to 10 causes from your Fishbone or Affinity Diagram, in a circle.
2. **Compare each pair.** For every pair ask: does one cause or influence the other?
3. **Draw the arrows.** From cause to effect. Only one direction per pair, the stronger one.
4. **Count in and out.** Write the number of outgoing and incoming arrows on each cause.
5. **Name the drivers.** Most outgoing arrows: driver causes. Most incoming: key outcomes.

Key points

- Arrows from cause to effect.
- One direction per pair.
- Most outgoing = driver cause.
- Drivers go to A4 for proof.

**Related tools:** [Fishbone Diagram](https://skillagility.com/en/resources/fishbone-diagram/) · [Affinity Diagram](https://skillagility.com/en/resources/affinity-diagram/) · [Pareto Analysis](https://skillagility.com/en/resources/pareto-analysis/)