# Design of Experiments (DOE) Guide

## Full Factorial Designs
- 2^k designs (k = 2 to 8 factors)
- Resolution: Full
- Runs: 2^k
- Use: When all interactions are important

## Fractional Factorial Designs
- 2^(k-p) designs
- Resolution III, IV, V
- Runs: 2^(k-p)
- Use: Screening experiments

## Response Surface Methods
- Central Composite Design (CCD)
- Box-Behnken Design
- Use: Optimization

## Taguchi Methods
- Orthogonal Arrays: L4, L8, L9, L16, L18, L27
- Signal-to-Noise Ratios
- Use: Robust design

## ANOVA
- One-way ANOVA
- Two-way ANOVA with interaction
- Use: Statistical significance testing