### Design of Experiments (DOE) Fundamentals Practitioner This credential recognizes a practitioner who has developed a foundational, working understanding of Design of Experiments (DOE) and can apply core experimental principles to improve real processes. Badge earners understand when and why DOE is appropriate, particularly in situations where simple trial-and-error or one-factor-at-a-time approaches are insufficient. They can design, run, and interpret basic full factorial experiments and use the results to inform process decisions within practical constraints. Holders of this certification can: - Explain the purpose of DOE and the limitations of informal experimentation - Identify factors, levels, and responses for a defined process problem - Design and execute **full factorial experiments** at a fundamental level - Apply essential DOE principles including randomization, replication, and blocking - Build and interpret DOE models to estimate main effects and interaction effects - Assess model quality using standard summary statistics - Use experimental results to guide optimization or achieve a defined performance target This certification reflects fundamental DOE capability, focused on hands-on application and interpretation rather than advanced experimental designs. Badge earners are prepared to contribute meaningfully to structured experimentation efforts and to continue building toward more advanced DOE methods over time.