decision-analysis

# Decision Analysis

Model and analyze complex decisions using structured techniques: decision tables, weighted scoring matrices, and decision trees. Creates clear, defensible decision frameworks with traceable rationale.

## What is Decision Analysis?

**Decision Analysis** is a systematic approach to evaluating complex choices by breaking them down into components: objectives, alternatives, criteria, and trade-offs. It transforms subjective judgment into structured, transparent reasoning.

| Technique | Best For | Output |
|-----------|----------|--------|
| **Decision Table** | Rule-based logic, many conditions | Action based on condition combinations |
| **Weighted Scoring Matrix** | Multi-criteria comparison | Ranked alternatives with scores |
| **Decision Tree** | Sequential decisions, uncertainty | Optimal path with probabilities |
| **Pugh Matrix** | Concept selection, design choices | Best concept vs baseline |

## Technique 1: Decision Tables

### What is a Decision Table?

A **decision table** captures complex conditional logic in a compact grid format. It lists all combinations of conditions and their corresponding actions.

| Component | Description | Example |
|-----------|-------------|---------|
| **Conditions** | Input variables/states | Customer type, Order value |
| **Actions** | Outcomes/responses | Apply discount, Require approval |
| **Rules** | Condition combinations | IF Premium AND >$1000 THEN 20% off |

### Decision Table Workflow

#### Step 1: Identify Conditions and Actions

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## Decision Context

**Decision:** [What are we deciding?]
**Trigger:** [When is this decision made?]

### Conditions (Inputs)
| # | Condition | Possible Values |
|---|-----------|-----------------|
| C1 | [Condition 1] | [Value A / Value B / ...] |
| C2 | [Condition 2] | [Yes / No] |
| C3 | [Condition 3] | [Low / Medium / High] |

### Actions (Outputs)
| # | Action | Description |
|---|--------|-------------|
| A1 | [Action 1] | [What happens] |
| A2 | [A