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  3. Specs just stating "the data will be averaged out"...

Specs just stating "the data will be averaged out"...

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  • C Offline
    C Offline
    cptKoala
    wrote on last edited by
    #1

    Just had a nice bundeled pile of papers dropped on my desk that are supposed to be the specifications of a feature I'm gonna have to implement. Started reading and discovered "the data will be averaged out" as only reference to how data will be manipulated. That's not how I would write the specs, but it's been years since I had my course on statistics at uni, and the fact that I lost my course notes somewhere in between 'temporary' relocations numbers 3 and 7, I'm hoping some of you good folks here could point me towards some good reference material. So, what are the 'need to have' publications in this field? Thanks in advance W.

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    • C cptKoala

      Just had a nice bundeled pile of papers dropped on my desk that are supposed to be the specifications of a feature I'm gonna have to implement. Started reading and discovered "the data will be averaged out" as only reference to how data will be manipulated. That's not how I would write the specs, but it's been years since I had my course on statistics at uni, and the fact that I lost my course notes somewhere in between 'temporary' relocations numbers 3 and 7, I'm hoping some of you good folks here could point me towards some good reference material. So, what are the 'need to have' publications in this field? Thanks in advance W.

      D Offline
      D Offline
      DaveAuld
      wrote on last edited by
      #2

      First, you should confirm how the data is to be averaged. Is the data a constant stream? is it a block of data, is it mean or median, etc. etc. http://en.wikipedia.org/wiki/Average[^] If you are working with a data stream, then you might want to confirm what sort of swing-door algorithm to use, what the deviation and exception criteria would be etc. It is such a woolly statement. Of course if you want the easy option, you could just sum up all the values and divide by how many values there are!

      Dave Find Me On: Web|Facebook|Twitter|LinkedIn


      Folding Stats: Team CodeProject

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      • C cptKoala

        Just had a nice bundeled pile of papers dropped on my desk that are supposed to be the specifications of a feature I'm gonna have to implement. Started reading and discovered "the data will be averaged out" as only reference to how data will be manipulated. That's not how I would write the specs, but it's been years since I had my course on statistics at uni, and the fact that I lost my course notes somewhere in between 'temporary' relocations numbers 3 and 7, I'm hoping some of you good folks here could point me towards some good reference material. So, what are the 'need to have' publications in this field? Thanks in advance W.

        M Offline
        M Offline
        Mark_Wallace
        wrote on last edited by
        #3

        Implement a mode average; that'll bluddy learn 'em.

        I wanna be a eunuchs developer! Pass me a bread knife!

        C 1 Reply Last reply
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        • M Mark_Wallace

          Implement a mode average; that'll bluddy learn 'em.

          I wanna be a eunuchs developer! Pass me a bread knife!

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          cptKoala
          wrote on last edited by
          #4

          Ooh, they will learn... As long as it's not made clear the average will be 42 :-\

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          • C cptKoala

            Just had a nice bundeled pile of papers dropped on my desk that are supposed to be the specifications of a feature I'm gonna have to implement. Started reading and discovered "the data will be averaged out" as only reference to how data will be manipulated. That's not how I would write the specs, but it's been years since I had my course on statistics at uni, and the fact that I lost my course notes somewhere in between 'temporary' relocations numbers 3 and 7, I'm hoping some of you good folks here could point me towards some good reference material. So, what are the 'need to have' publications in this field? Thanks in advance W.

            N Offline
            N Offline
            Nagy Vilmos
            wrote on last edited by
            #5

            Mode of the last two values, that'll even it out and flatten the spikes.


            Panic, Chaos, Destruction. My work here is done. Drink. Get drunk. Fall over - P O'H OK, I will win to day or my name isn't Ethel Crudacre! - DD Ethel Crudacre I cannot live by bread alone. Bacon and ketchup are needed as well. - Trollslayer Have a bit more patience with newbies. Of course some of them act dumb - they're often *students*, for heaven's sake - Terry Pratchett

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            • D DaveAuld

              First, you should confirm how the data is to be averaged. Is the data a constant stream? is it a block of data, is it mean or median, etc. etc. http://en.wikipedia.org/wiki/Average[^] If you are working with a data stream, then you might want to confirm what sort of swing-door algorithm to use, what the deviation and exception criteria would be etc. It is such a woolly statement. Of course if you want the easy option, you could just sum up all the values and divide by how many values there are!

              Dave Find Me On: Web|Facebook|Twitter|LinkedIn


              Folding Stats: Team CodeProject

              C Offline
              C Offline
              cptKoala
              wrote on last edited by
              #6

              I'm going for the easy option... every set will have an average of 42 Actually the data will be a year worth of call sessions made and durations of those calls. The end results are to be some 'trend' graphs (not me saying this... it's them bloody specs forcing me) and the PM wants to 'flatten' out the graphs... I wanted to read up on statistics and analysis a bit, to be able to counter the PM if he's talking b*ll*cks again...

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              • N Nagy Vilmos

                Mode of the last two values, that'll even it out and flatten the spikes.


                Panic, Chaos, Destruction. My work here is done. Drink. Get drunk. Fall over - P O'H OK, I will win to day or my name isn't Ethel Crudacre! - DD Ethel Crudacre I cannot live by bread alone. Bacon and ketchup are needed as well. - Trollslayer Have a bit more patience with newbies. Of course some of them act dumb - they're often *students*, for heaven's sake - Terry Pratchett

                C Offline
                C Offline
                cptKoala
                wrote on last edited by
                #7

                Thanks Nagy, have a gin on me :)

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                • C cptKoala

                  Just had a nice bundeled pile of papers dropped on my desk that are supposed to be the specifications of a feature I'm gonna have to implement. Started reading and discovered "the data will be averaged out" as only reference to how data will be manipulated. That's not how I would write the specs, but it's been years since I had my course on statistics at uni, and the fact that I lost my course notes somewhere in between 'temporary' relocations numbers 3 and 7, I'm hoping some of you good folks here could point me towards some good reference material. So, what are the 'need to have' publications in this field? Thanks in advance W.

                  C Offline
                  C Offline
                  Chris Quinn
                  wrote on last edited by
                  #8

                  Recommended textbook on my uni stats course was called "How To Lie With Statistics"[^] by Darrel Huff - a very small book, but very entertaining and enlightning

                  ==================================== Transvestites - Roberts in Disguise! ====================================

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                  • C cptKoala

                    Just had a nice bundeled pile of papers dropped on my desk that are supposed to be the specifications of a feature I'm gonna have to implement. Started reading and discovered "the data will be averaged out" as only reference to how data will be manipulated. That's not how I would write the specs, but it's been years since I had my course on statistics at uni, and the fact that I lost my course notes somewhere in between 'temporary' relocations numbers 3 and 7, I'm hoping some of you good folks here could point me towards some good reference material. So, what are the 'need to have' publications in this field? Thanks in advance W.

                    S Offline
                    S Offline
                    S Douglas
                    wrote on last edited by
                    #9

                    cptKoala wrote:

                    "the data will be averaged out"

                    Whenever I get specs like that I start out using rand()


                    Common sense is admitting there is cause and effect and that you can exert some control over what you understand.

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