- Activity Duration = EF-ES+1
- Activity Duration = LF-LS+1
- ES = EF of predecessor +1
- LF = LS of successor -1
Ex. Page 90 of PMP Certification Mathematics by Vidya And Riva
9 2 11 15 1 16
19 10 21 21 6 22
ES Dur. EF
LS Slack LF
Why other books like Headfirst explains such concept while others above cannot see it applying. Am I missing something am talking about +1, -1 in the equations above just want to understand this but it seems different diagrams some support such other not why ?
Moderators: Yolanda Mabutas, Ahmed Amin, Scott Gillard, Mary Kathrine Padua, ERIC BARTLETT, Gail Freedman, Kevin Nason, Steven Mudrinich, PMP, Mark Wuenscher, PMP, John Wolverton, Tracy Shagnea, PMP, Jada Garrett
This interview with Simona Fallavollita (LinkedIn Profile) was recorded at the magnificient Project Management Institute (PMI)® Global Conference 2017 in Chicago, Illinois. We discuss the how, what, why and when of the changes that are coming to the PMP exam.