Sixsigma

---
name: "sixsigma"
version: "1.0.0"
description: "Six Sigma methodology reference — DMAIC process, statistical tools, control charts, and capability analysis. Use when running improvement projects, analyzing process variation, or preparing for Six Sigma certification."
author: "BytesAgain"
homepage: "https://bytesagain.com"
source: "https://github.com/bytesagain/ai-skills"
tags: [six-sigma, dmaic, quality, statistics, process-improvement, industrial]
category: "industrial"
---

# Six Sigma — Six Sigma Methodology Reference

Quick-reference for DMAIC methodology, statistical tools, control charts, and process capability.

## When to Use

- Running a DMAIC improvement project
- Analyzing process capability (Cp, Cpk, Pp, Ppk)
- Setting up control charts (Xbar-R, p-chart, c-chart)
- Performing root cause analysis (fishbone, 5 Why, FMEA)
- Preparing for Six Sigma Green/Black Belt certification

## Commands

### `intro`

```bash
scripts/script.sh intro
```

Six Sigma overview — philosophy, sigma levels, belt system, history.

### `dmaic`

```bash
scripts/script.sh dmaic
```

DMAIC phases: Define, Measure, Analyze, Improve, Control.

### `statistics`

```bash
scripts/script.sh statistics
```

Key statistical concepts: normal distribution, hypothesis testing, regression.

### `charts`

```bash
scripts/script.sh charts
```

Control charts: Xbar-R, Xbar-S, p-chart, np-chart, c-chart, u-chart, I-MR.

### `capability`

```bash
scripts/script.sh capability
```

Process capability: Cp, Cpk, Pp, Ppk, sigma level, DPMO.

### `tools`

```bash
scripts/script.sh tools
```

Six Sigma tools: fishbone, 5 Why, FMEA, Pareto, DOE, MSA.

### `examples`

```bash
scripts/script.sh examples
```

Example DMAIC project walkthroughs.

### `checklist`

```bash
scripts/script.sh checklist
```

DMAIC phase gate review checklist.

### `help`

```bash
scripts/script.sh help
```

### `version`

```bash
scripts/script.sh version
```

## Configuration

| Variable | Description |
|----------|-------------|
| `SIXSIGMA_DIR` | Data directory (default: ~/.sixsigma/) |

---

*Powered by BytesAgain | bytesagain.com | hello@bytesagain.com*