Hey there! Sign in to join this conversationNew here? Join for free
    • Thread Starter
    Offline

    14
    ReputationRep:
    I've been doing a few papers and keep losing marks on critical path analysis. There's often dummies in weird places and I can't work out why, and it's been on more than one paper.

    Name:  d1.png
Views: 324
Size:  36.8 KB

    That's just one example, but I've seen almost the exact same thing in at least one other paper. It's the part where it goes

    D -> node -> dummy

    I don't understand why a dummy is needed here. Why can't activity D just go straight to the node ending at E?
    • Thread Starter
    Offline

    14
    ReputationRep:
    Exam is tomorrow so would really appreciate any help!!
    Offline

    1
    ReputationRep:
    Activity D and E are required for F to happen, however D can start at time 0, so you dummy it in as it does not require A and B to be complete before doing activity D.
 
 
 
Poll
Do you agree with the PM's proposal to cut tuition fees for some courses?
Useful resources

Make your revision easier

Maths

Maths Forum posting guidelines

Not sure where to post? Read the updated guidelines here

Equations

How to use LaTex

Writing equations the easy way

Student revising

Study habits of A* students

Top tips from students who have already aced their exams

Study Planner

Create your own Study Planner

Never miss a deadline again

Polling station sign

Thinking about a maths degree?

Chat with other maths applicants

Can you help? Study help unanswered threads

Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.