Delphi Technique

A disciplined approach to prediction and estimation that iteratively gathers input from experts until their views align into a consensus.

Key Points

  • Uses multiple anonymous rounds of expert input to reduce bias and groupthink.
  • A neutral facilitator summarizes results and shares feedback between rounds.
  • Converges toward consensus; stop when variance is low or a set number of rounds is reached.
  • Helpful for estimating cost, schedule, scope, and risk when data is limited or uncertain.

Example

A project manager needs effort estimates for a new analytics feature. She sends a questionnaire to several SMEs, collects their estimates, and shares an anonymous summary of ranges and rationales. After two more rounds of revision based on the feedback, the experts converge on a realistic effort range the team can use for planning.

PMP Example Question

A project involves unfamiliar technology, and the PM wants unbiased duration estimates without one expert dominating the discussion. Which technique should be used?

  1. Delphi technique
  2. Brainstorming session
  3. Monte Carlo simulation
  4. One-on-one expert judgment interview

Correct Answer: A — Delphi technique using anonymous expert consensus

Explanation: The Delphi technique gathers estimates from experts anonymously over multiple rounds to reduce bias and reach a consensus, unlike brainstorming, interviews, or simulation.

How To Land the Job and Interview for Project Managers Course

Take the next big step in your project management career with HK School of Management. Whether you're breaking into the field or aiming for your dream job, this course gives you the tools to stand out, impress in interviews, and secure the role you deserve.

This isn’t just another job-hunting guide—it’s a tailored roadmap for project managers. You’ll craft winning resumes, tackle tough interview questions, and plan your first 90 days with confidence. Our hands-on approach includes real-world examples, AI-powered resume hacks, and interactive exercises to sharpen your skills.

You'll navigate the hiring process like a pro, with expert insights on personal branding, salary negotiation, and career growth strategies. Plus, downloadable templates and step-by-step guidance ensure you're always prepared.

Learn from seasoned professionals and join a community of ambitious project managers. Ready to land your ideal job and thrive in your career? Enroll now and take control of your future!



Launch your career!

HK School of Management provides world-class training in Project Management, Lean Six Sigma, and Agile Methodologies. Just for the price of a lunch you can transform your career, and reach new heights. With 30 days money-back guarantee, there is no risk.

Learn More