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Need brief explanation on question

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pank_pmp
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Need brief explanation on question

Tue Aug 25, 2015 6:21 am

I have below said book but do not see reading this? :)

Question:

Of the three project buffer methods - square root of the sum of squares, critical chain project management method (CCPM), and halving the sum of most likely estimates - which typically provides the most adequate buffer
A. Square root of the sum of squares
B. Square of the sum of squares
C. Critical chain project management method (CCPM)
D. Halving the sum of most likely estimates

Answer:

A - The agile practitioner should follow several rules of thumb when estimating a project buffer: 1) Only use a buffer if the project has more than 10 user stories, 2) The square root of the sum of squares method has shown to provide the most accurate buffer, 3) the estimate buffer should be at least 20% of the total project duration, 4) In the absence of sufficient data. like worst case scenario estimates, you can use the halving of most likely estimates to estimate a project buffer. [Agile Estimating and Planning. Mike Cohn.] [Agile estimation]
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saket
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Re: Need brief explanation on question

Tue Aug 25, 2015 8:03 am

you may not get such questions in exam.
Explore our online PMP Program , it makes PMP Easy :-) http://goo.gl/ZmD3xF

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