Monte Carlo Simulation

A quantitative method that runs a computer model many times, randomly drawing input values from specified probability distributions and chance-based decision paths. The resulting set of simulations produces a distribution that shows the range and likelihood of possible project outcomes.

Key Points

  • Uses random sampling from defined probability distributions for uncertain inputs.
  • Models branching logic and risks to reflect different possible paths.
  • Generates probabilistic results (e.g., P50, P80) for cost, schedule, or scope outcomes.
  • Supports contingency sizing, risk-informed decisions, and communicating uncertainty.

Example

A project team assigns probability distributions to activity durations (for example, triangular estimates). They run 10,000 simulations of the schedule to estimate the chance of finishing by a contractual date. The output shows a completion date curve indicating 60% confidence by May 15 and 80% confidence by May 25, guiding buffer and contingency planning.

PMP Example Question

Which technique provides a probability distribution of project finish dates by repeatedly sampling activity duration estimates from their defined distributions?

  1. Three-point estimating
  2. Decision tree analysis
  3. Monte Carlo simulation
  4. Fast tracking

Correct Answer: C — Monte Carlo simulation

Explanation: Monte Carlo uses random sampling across many iterations to produce a probabilistic range of outcomes, such as a completion date distribution.

AI for Project Managers — Build Plans Faster, Lead Better

Turn messy inputs into structured project plans in minutes. If you are a project manager tired of spending hours on documentation, this course shows you how to use AI to work faster while staying fully in control.

This is not a generic AI course. You will learn how to use AI as a practical co-pilot to build real project artifacts—charters, WBS, schedules, risk registers, and executive reports—using structured, reliable prompt frameworks.

You will also learn how to keep your project aligned across scope, schedule, cost, and risk, and how to interpret performance data like Earned Value Management to support better decisions and communication.

Everything is designed for immediate use. You get ready-to-use prompt templates and workflows you can apply right away in your projects. Watch the video to see how it works and start building your first AI-supported project plan.

Explore the Course


Lead with clarity, influence, and outcomes.

HK School of Management offers a practical Leadership for Project Managers course for real projects, tight deadlines, and cross-functional teams. Learn to set direction, align stakeholders, and drive commitment without relying on title. Practical skills, tools, and guidance you can apply right away. Covered by Udemy's 30-day refund policy.

Learn More