Predecessor Activity

A task that must occur before another, dependent task in the project schedule.

Key Points

  • Defines the logical order of tasks and establishes dependencies between activities.
  • Can be linked with different relationship types (FS, SS, FF, SF) along with leads or lags.
  • An activity may have multiple predecessors, a single predecessor, or none at project start.
  • Predecessor and successor relationships influence the critical path and schedule flexibility.

Example

In a building project, "Complete foundation" must finish before "Start framing" can begin. "Complete foundation" is the predecessor activity; "Start framing" is its successor.

PMP Example Question

Which statement best describes a predecessor activity?

  1. A task that starts only after its successor finishes.
  2. A task that must occur before a dependent task in the schedule.
  3. A task that is not linked to any other activity.
  4. A task that represents the longest path through the schedule network.

Correct Answer: B — a task that must occur before a dependent task

Explanation: A predecessor activity is one that logically comes before another activity that depends on it.

Advanced Lean Six Sigma — Data-Driven Excellence

Solve complex problems, reduce variation, and improve performance with confidence. This course is designed for professionals who already know the basics and want to apply advanced Lean Six Sigma tools to real business challenges.

This is not abstract statistics or theory-heavy training. You’ll use Excel to perform real analysis, interpret results correctly, and apply tools like DMAIC, SIPOC, MSA, hypothesis testing, and regression without memorizing formulas or relying on expensive software.

You’ll learn how to measure baseline performance, analyze process capability, use control charts to maintain stability, and validate improvements using statistical evidence. Templates, worked examples, and structured walkthroughs help you apply each concept immediately.

Learn through a complete, real-world Lean Six Sigma project and develop the skills to lead data-driven improvements with credibility. If you’re ready to move beyond basics and make decisions backed by data, enroll now and take your Lean Six Sigma expertise to the next level.



Launch your Agile career!

HK School of Management helps you master Agile and Scrum—faster. Learn practical playbooks, AI-powered prompts, and real-world workflows to plan smarter, deliver sooner, and keep stakeholders aligned. For the price of lunch, you’ll get templates, tools, and step-by-step guidance to level up your projects. Backed by our 30-day money-back guarantee—zero risk, clear path to results.

Learn More