Goodluck O-10 IT-Appers

[nacho]

Yea but the lead time should be 7 days because:
Task A takes 5 days
in which task B will start at the same time taking only 2 days.
BUT, you have to wait an extra two days after task A is complete, therefore Task C can only start 7 Days after the project begins? Therefore lead time = 7 days?
Slack time = 3, sorry typo.
Task C has a lag time of 2 days? as it must wait those 2 days extra days?

Umm and assuming task a and b start at the same time,
I think
Task C has 5 days lead time (By definition)
Task B has 3 days slack time (Task B can run over 3 days, meaning it finishes at the same time as Task A, thus not effecting the deadline)
Task B also has 3 days lag time (If the project runs accordingly, Task C begins immediately after Task A (because longest task), and Task A is 3 days longer then Task B, meaning the lag time is also 3 days)

Therefore, Slack Time = Lag Time?

Remember, lag time is the amount of time a task can run over time without affecting the critical path. Task B can run over time, not Task C

Thats my understanding of it, but I may be wrong.

No, task C must wait an extra 2 days as specified. So would the lag time become 7 days?

Edit: this is literally the worst thing that could happen 16 hours before an exam..

[ttn]

Great, now im confused LOL so bad.
This is what i gather now.
Lag team : Time inbetween tasks
Slack time: DIFFERENT FROM Lag time, time a task can go overtime without affecting the end date of the project
Lead time: Time leading up to a task,
Eg task A = 5 Days
    task B = 2 days
Task C canonly start after both task  A and B are finished plus two days, so:

Task C has a lead time of 7 days.
Task B has a slack time of 2 days.
Task C has a lag time of 2 days?

Damn missed that part

So, yeah you were correct, besides the typo.
Task C has a lead time of 7 days.
Task B has a slack time of 3 days.
Task C has a lag time of 2 days.

[nacho]

So in the end, it's

Task C has a lead time of 7 days
Task B has a slack time of 3 days
Task C has a lag time of 2 days?

[ttn]

yeap

[Plan-B]

Oh yeah, lead time should be 7... Sorry didn't see the plus two days too. << Hopefully i don't do this in exam

[nacho]

Ok, now i'm only confused because the potts text book says they are the same thing?
"Lag/slack time is the time between tasks"

[papertissue]

They aren't. I did a practice exam that asked the difference.

[ttn]

I think lag time is more for tasks that are on the same path? while slack time are tasks on different paths and therefore can change the critical path.

lol I dunno.

[nacho]

ahwell guys, screw it!
As if they'd ask this question anyway,they used it for 07

[Plan-B]

They aren't. I did a practice exam that asked the difference.

Yeah, wasn't that the Kilbaha 2010 one? Alot of these practice exams are really dodgy, you can't fully trust the answers and questions provided. : D
I'm more inclined to trust the textbooks and Mark Kelly. Although right now there is a discrepancies between the two.

ahwell guys, screw it!
As if they'd ask this question anyway,they used it for 07

Yup, I'm going with Potts definition. Unless, they specifically have a question that asks for it's lag time, and then the slack time, then I'll go with Mark Kelly.

[ttn]

ahwell guys, screw it!
As if they'd ask this question anyway,they used it for 09

lol

[papertissue]

True! And Potts is more current than Mark Kelly's information on project management, so yeah.
At least we kind of know the gist of it now, just incase

Hahaa, nacho

[ttn]

Alright, I'm off to bed. Good luck everyone.

[Scoota.]

you to mate. sleep well.

[schnappy]

What's lead time?