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Cost Performace Index (Rate) at which the project is progressing,

CPI = EV/PV = 1000,000/1200,000

EAC = AC + (BAC-EV)/CPI  = 1200,000 + 1000,000 x 1200,000/1000,000 = 2400,000

So, the remaining work value, i.e., BAC-EV = 1000, 0000 has to progress at the past progress speed (CPI).

Hello, just took the PMP last week and failed. There was a question on Critical Path with a normal activity node say "A". From the study materials every PDM would have a node or activity with 1 number above the node showing the duration. On the question the node had 4 different numbers on the node- is the Top left corner the duration, or is it the sum of all the number around the node? Thanks Jordan

1. When only one number is positioned at the top centre of the node, then it represents duration.

2. When three numbers are shown, it represents three-point estimates. (optimistic-most likely-pessimistic)

3. When four numbers are shown, the top left represents the early start; top right represents the early finish; bottom left represents the late start and the bottom right represents the late finish

Thanks,

Manick, PMP

Thanks Manick,

So if I was asked to calculate the critical path with a node with numbers in all 4 corners, how do I calculate the duration for that activity node?

Thanks

Jordan

Dear Jordan,

As I said earlier, the top left represents Early Start Time (ES) and bottom left represents Late Start Time (LS); top right represents Early Finish Time (LF) and bottom right represents Late Finish Time (LF).

1. If ES=LS, it means that particular activity is on the critical path. It means you do not have any time to play with.

2. Duration of the activity = EF-ES (or) LF-LS

Thanks,

Manick, PMP

Manick ,

For a example so I am sure for instance I have activity "b" with a ES of 1 EF of 6,

LS of 18 and LF 23- after subtracting EF from ES and LF- LS I am left with 2 numbers in the case on top of the node I would have 5 and bottom 5- would the duration be 5?

If the top and bottom number were different how do I get the duration? I can not find this in any of my guides.  Thanks 

Jordan

Jordan,

Duration=EF-ES=LF-LS (ALWAYS)

The duration will be the same, irrespective of whether you use Early Times or Late Times; they will not give two different numbers. Thats why you do not find anything in your guides.

And similarly, float=LS-ES=LF-EF (ALWAYS)

Thanks Manick- makes sense for the duration.

Another question, reading about stakeholders, if a project is in is control all is well, but a stakeholder has concerns and suspect the project to go over budget and sch. Where would the PM refer the stakeholder too?  Thanks

Generally, there will be status reports that are generated at regular intervals, say monthly, which should include details about your current status and forecasts for the remaining of the project. Indicators like CPI and SPI also will give you a clear indication where the project currently stands.

The stakeholder should get regular updates depending on the communication plan. It also depends how important is your stakeholder is; depending on this your stakeholder management strategy will have a plan to manage stakeholders.

Question on control limits and "Rule of 7"- if audits are done and a question gives you say 11 different measurables  from the audits.  In the question the quality plan allows for the product to be within a range to be a accepted deliverable.  

Should I take a 11 numbers add them up and divide to find the mean.

Then look at the order of the question that has the numbers from the audits and see if 7 numbers in a row are outside the mean?

Thanks,

Jordan