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two questions about SCRUM learn materials
Last Post 09 Jan 2014 08:07 AM by Sandeep Kamat. 3 Replies.
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Mehdi Hafezi
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Mehdi Hafezi

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01 Jan 2014 09:45 PM
    by preparing myself for certification exam, there are following 2 (inconsistencies/ questions) raised:

    1) in Scrum guide (July 2013) page 6: the optimal size of dev. team is defined as (3 =< optimal size =< 9 )
    but in the ScrumReferenceCard written by AuthorMichael James , the size is defined as :7 ± 2 members
    this is slightly different ( 5 =< optimal size =< 9 ). what is now the lower limit for a optimal S. dev. size?

    2) in the S. Guide (July 2013) page 12 , it defines timebox for the retrospective meeting (for a 4 weeks sprint): 3 hours.

    "The Sprint Retrospective occurs after the Sprint Review and prior to the next Sprint Planning. This is a three-hour time-boxed meeting for one-month Sprints."

    but in the book (Software in 30 days/ 2012) chap5 page 60 says that upper limit of such meeting is 4 hours?
    "... this meeting should not never exceed four hours."

    I probably will for the certification exam take the version which are written in the current scrum guide, but should the new versions handel these inconsistencies?
    Ian Mitchell
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    Posts:1556
    Ian Mitchell

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    02 Jan 2014 12:10 AM
    7 ± 2 members is also the range that is cited in the Scrum Primer, which broadly reflects the position of the Scrum Alliance. It's likely that the Scrum Reference card is reflecting this position also. For scrum.org exams you should go by the recommendations contained in the Scrum Guide.

    As for a 4 hour Sprint Retrospective, I think that must be a typo in the book. Good spot.
    Joshua Partogi
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    Posts:109
    Joshua Partogi

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    05 Jan 2014 07:40 AM
    Hi Mehdi,

    If you want to take the PSM assessment, Scrum Guide is the reliable source.
    Sandeep Kamat
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    Posts:21
    Sandeep Kamat

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    09 Jan 2014 08:07 AM
    For the purpose of the exam I would go with the Scrum Guide recommendation 3 to 9 and 3 hours. However, I am wondering if what is the actual used by your scrum teams for sprint retrospectives. I have seen 90mins to 2 hrs
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