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ERROS found in PMchallenge Questions

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George Lewis Program/Project Manager| DXC Technology Company Heredia, Costa Rica
Some questions references other versions of PMBOK so be careful
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Cássio Silva Oliveira Software Engineer| Volkswagen Berlin, Berlin, Germany
Hello!

I would like to suggest an possible improvement for one question.
(Is this topic the best place for that or maybe there are a more appropriate channel?)

The question is regarding to the PERT formula. The lack of parenthesis makes all the alternatives mathematically wrong (despite there are one "less incorrect" alternative):

Q What is the formula for three-point PERT estimating?
O+4M+P/3
O+4M+P/6
O+M+P/6
O+M+P/3

Question link: http://www.projectmanagement.com/questions/question.cfm?ID=6012
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1 reply by George Lewis
Feb 14, 2016 5:07 PM
George Lewis
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Thanks for sharing Cassio, the idea of this blog it to point out specific errors so it could be easier to update...
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Anonymous
Rami - errors wise - I did about 150Q only and found 2 or 3 if I recall. However, outdated there were many.

Kristin - all what need to be done on this is to put a disclaimer on the page for PM Challenge - saying that some materials could be from old versions of PMBOK Guide and some materials might not be per the Guide.

If you are now updating to the newest version of the guide - in 11 months there will be a new one - so 3 years behind schedule :-)
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Anonymous
Feb 11, 2016 11:53 PM
Replying to Cássio Silva Oliveira
...
Hello!

I would like to suggest an possible improvement for one question.
(Is this topic the best place for that or maybe there are a more appropriate channel?)

The question is regarding to the PERT formula. The lack of parenthesis makes all the alternatives mathematically wrong (despite there are one "less incorrect" alternative):

Q What is the formula for three-point PERT estimating?
O+4M+P/3
O+4M+P/6
O+M+P/6
O+M+P/3

Question link: http://www.projectmanagement.com/questions/question.cfm?ID=6012
Two problems with this question
1. It is written without the parentheses, which reflect that only the "P" is divided by 3 or 6. This is a second grade error.

2. Assuming the first error is fixed; the second error is that per recent changes - now we talk about two type of three point estimate based on triangular distribution (4th answer) and beta distribution (2nd answer)
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Markus Kopko AI Enabler for Project & Program Mgmt | Founder PMotion.ai / The PM AI Coach| PMotion.ai Hamburg, Hamburg, Germany
Feb 11, 2016 12:21 PM
Replying to Rami Kaibni
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Now I have to disagree with you a little bit Markus :-)

I solved 1000 questions and found only 1 question with a suspicious or let us say possible wrong answer. Those questions are straight forward and helps you review what you've went through in the PMBOK. They are far away from the real exam questions but I personally found them useful as a review material.
Hello Rami,

well, we are allowed to disagree each other sometimes, i guess ... ;)

But i will still insist here; had nearly the exact same discussion some times before with Stephane ...;)

First what i do agree about: Yes, this PM CHallenge Questions are great; fun tool and really good for reflecting and reviewing knowledge.
And like Kristin added, it is not only about PMBoK Guide and PMI's pm school, but also others, what is great also and highly appriciated.

And now comes the bit BUT here from my perspective (and it is just my personal opinion, but it is based on some experience):
Now and than somebody stated that PM Challenge here on pm.com was a good tool for PMP exam prapration in the sense of sample questions/mock exams! And that is what i definitly disagree about.
Furthermore it could be even counterproductive if some PMP aspirant relys on this statement. So why do i think so?
Well, not only because there is some other stuff than PMBoK Guide involved and not only cause there is some outdated and may be even wrong material included.
THe biggest issue i do have is, that the type of questions and even more the type of answering options is really often (not always!) untypically regarding the PMP exam.
For instance:
You will NEVER see an answering option like "all of the above" or "non of the above" in the PMP exam, but they are often used within PM Challenge (what is not really bad, but it is just not like the PMNP exam).

Another point is, that - like you stated - almost all of the questions are pretty straight forward, what is great for doing some of them here and there.
But most of the exam questions are situational and long textet ... see what i mean?

I do not say: don't use it!
What i want to say: don't use it for PMP exam preparation.

There are some really good and professional PMP exam simulators available out there which gave you the option to really simulate the exam situation. Please rely on them for PMP exam preparation purposes!

Just my 2 cents ...
;)
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1 reply by Rami Kaibni
Feb 12, 2016 11:22 AM
Rami Kaibni
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Sounds like e agree ... I do not disagree with anything you've mentioned here ... We are on the same page Markus :D
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Rami Kaibni
Community Champion
Senior Projects Manager | Field & Marten Associates New Westminster, British Columbia, Canada
Feb 12, 2016 3:06 AM
Replying to Markus Kopko
...
Hello Rami,

well, we are allowed to disagree each other sometimes, i guess ... ;)

But i will still insist here; had nearly the exact same discussion some times before with Stephane ...;)

First what i do agree about: Yes, this PM CHallenge Questions are great; fun tool and really good for reflecting and reviewing knowledge.
And like Kristin added, it is not only about PMBoK Guide and PMI's pm school, but also others, what is great also and highly appriciated.

And now comes the bit BUT here from my perspective (and it is just my personal opinion, but it is based on some experience):
Now and than somebody stated that PM Challenge here on pm.com was a good tool for PMP exam prapration in the sense of sample questions/mock exams! And that is what i definitly disagree about.
Furthermore it could be even counterproductive if some PMP aspirant relys on this statement. So why do i think so?
Well, not only because there is some other stuff than PMBoK Guide involved and not only cause there is some outdated and may be even wrong material included.
THe biggest issue i do have is, that the type of questions and even more the type of answering options is really often (not always!) untypically regarding the PMP exam.
For instance:
You will NEVER see an answering option like "all of the above" or "non of the above" in the PMP exam, but they are often used within PM Challenge (what is not really bad, but it is just not like the PMNP exam).

Another point is, that - like you stated - almost all of the questions are pretty straight forward, what is great for doing some of them here and there.
But most of the exam questions are situational and long textet ... see what i mean?

I do not say: don't use it!
What i want to say: don't use it for PMP exam preparation.

There are some really good and professional PMP exam simulators available out there which gave you the option to really simulate the exam situation. Please rely on them for PMP exam preparation purposes!

Just my 2 cents ...
;)
Sounds like e agree ... I do not disagree with anything you've mentioned here ... We are on the same page Markus :D
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George Lewis Program/Project Manager| DXC Technology Company Heredia, Costa Rica
Feb 11, 2016 2:57 PM
Replying to Kristin Jones
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Hello all! Thank you for your comments. Please note that we are actively updating questions to reflect the newest version of the PMBOK Guide. Also, the questions found in PM Challenge are inclusive of other project management schools of thought beyond the PMBOK Guide.
Thanks for the update, it's a great tool... Hope it could be updated for us to use it formally!!!
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George Lewis Program/Project Manager| DXC Technology Company Heredia, Costa Rica
Feb 11, 2016 11:53 PM
Replying to Cássio Silva Oliveira
...
Hello!

I would like to suggest an possible improvement for one question.
(Is this topic the best place for that or maybe there are a more appropriate channel?)

The question is regarding to the PERT formula. The lack of parenthesis makes all the alternatives mathematically wrong (despite there are one "less incorrect" alternative):

Q What is the formula for three-point PERT estimating?
O+4M+P/3
O+4M+P/6
O+M+P/6
O+M+P/3

Question link: http://www.projectmanagement.com/questions/question.cfm?ID=6012
Thanks for sharing Cassio, the idea of this blog it to point out specific errors so it could be easier to update...
avatar
George Lewis Program/Project Manager| DXC Technology Company Heredia, Costa Rica
After I get to the 1000 questions, are they new ones or are they just repeating? I want more :)
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1 reply by Rami Kaibni
Feb 14, 2016 11:39 PM
Rami Kaibni
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You can find a mix of new ones and repeated ones. It doesn't hurt to go through some of them again as they are helpful for reviewing and memorizing purposes only, not exam wise.
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Rami Kaibni
Community Champion
Senior Projects Manager | Field & Marten Associates New Westminster, British Columbia, Canada
Feb 14, 2016 5:10 PM
Replying to George Lewis
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After I get to the 1000 questions, are they new ones or are they just repeating? I want more :)
You can find a mix of new ones and repeated ones. It doesn't hurt to go through some of them again as they are helpful for reviewing and memorizing purposes only, not exam wise.
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George Lewis Program/Project Manager| DXC Technology Company Heredia, Costa Rica
Anybody else found errors?

I'm creating a log with the wrong answers and correcting only those that I think are wrong... It might be of help to someone.
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