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What is a purified average?

Discussion in 'Shooting Related Threads' started by 635 G, Jun 5, 2012.

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  1. 635 G

    635 G Well-Known Member

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    At some shoots I attend, classification is done using a purified average? What is a purified average?

    Phil Berkowitz
  2. V10

    V10 Well-Known Member

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    From the Rule Book:

    "PURIFIED AVERAGE is best explained as the shooter’s handicap average after disregarding up to two handicap scores that deviate more than 10% below the shooter’s average."
  3. WJN

    WJN TS Member

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    I think my average is polluted.

    Jim
  4. BigM-Perazzi

    BigM-Perazzi Well-Known Member

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    Mine was purified by the ATA 2 yd reduction....
  5. motrap

    motrap Member

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    Although what V10 posted is correct (taken directly from the RULE BOOK Pg. 26 and Pg. 65) ......... I don't think that info is what 635G is asking .....

    There is no "CLASSIFICATION" with reference to Handicap events ....... 635G must be referencing Singles and/or Doubles .........

    A PURIFIED AVG. for CLASSIFICATION purposes would mean the classifiers will throw out abnormally HIGH and abnormally LOW scores and AVERAGE the rest of the shooters scores to find his Classification for that shoot .....

    Rudy
  6. perga1

    perga1 TS Member

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    MOTRAP, there is no mention of high scores being ommitted, only low scores.


    "PURIFIED AVERAGE is best explained as the shooter’s handicap
    average after disregarding up to two handicap scores that deviate
    more than 10% below the shooter’s average."

    G. REVIEWS
    1. 1000 TARGET REVIEW
    The shooting record of each member will be automatically reviewed
    for possible yardage changes after each successive 1000 or more
    registered Handicap targets shot in the current and previous year if no
    yardage was earned. See 1000 Target Review Summary, Page 65.
    a. A shooter with a low purified handicap average (the average with
    abnormally low scores deleted) accompanied by a relative 16 yard
    average, will receive a one yard reduction" JRM
  7. trapshootin hippie

    trapshootin hippie Well-Known Member

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    They oughta throw out the exceptionally high score too.

    GneJ
  8. BigM-Perazzi

    BigM-Perazzi Well-Known Member

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    Hippie, those show 'known ability'
  9. grntitan

    grntitan Well-Known Member

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    Mine ain't "purified" but it is Definately "pathetic".
  10. oskerspap12

    oskerspap12 Active Member

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    Mine is putrid............my average that is.
  11. Unknown1

    Unknown1 Active Member

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    Sorta sounds like ATA is learning lessons from NASCAR... tinker and fiddle with the rules and procedures until you get things to come out the way you want them to. Since when is an "average" figured by using only some of the data? Are they afraid feelings will be hurt?

    Keller
  12. minnship8

    minnship8 Well-Known Member

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    All my scores are average, except the ones that are higher and the ones that are lower.

    Chip
  13. Wolfman

    Wolfman Member

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    Unknown1 - it is common to toss aberrant measurements in statistical analysis. There is significant benefit because those observations which are outliers obscure the real meaning in the data. For instance, 1,5,6,5,6,7 should have the 1 yanked because it will skew the variance and mean. This is not to say it isn't without controversy, but more from laymen that statisticians.
  14. Unknown1

    Unknown1 Active Member

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    The it's really a case of the ATA doing the sandbagging for the shooter... "Oh, poor guy. He had sme bad days and shot a couple really low scores. We should just kick those under the table so nobody sees and figure his average without them."

    That's what I said... fiddle around with the data to get the results you think you ought to get. Isn't the 1 a valid part of the data whether YOU think it belongs there or not?

    Keller
  15. ivanhoe

    ivanhoe Active Member

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    "The it's really a case of the ATA doing the sandbagging for the shooter..."

    The purified Average in this case is listed under the 1000 target review summary simply explaining how the reduction or the lack of one is arrived at.

    Why try to make something more of it. As far as the sandbagging aspect of it is concerned. More lower scores and being divided by a larger number will promote sandbagging. Less lower scores divided by lower number should make it more difficult. By helping to keep the average higher and therefore harder to get a reduction.

    Bob Lawless
  16. dhip

    dhip Active Member

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    Mine gets kinda fishy,especially when I try to shoot the day after a fishing tournament.Really stinks..

    Doug H.
  17. 870

    870 Active Member

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    "The it's really a case of the ATA doing the sandbagging for the shooter... "Oh, poor guy. He had sme bad days and shot a couple really low scores. We should just kick those under the table so nobody sees and figure his average without them."

    There is a poster-boy statement showing someone does not understand what he is talking about when bringing ATA into the discussion.

    There is no mention of "purified average" in classifying a shooter, and how in the world do you arrive at the statement that it helps a sandbagger? It is designed to accomplish the complete opposite in reality.
  18. Unknown1

    Unknown1 Active Member

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    Yeah... you're right. Sandbagging was a bad choice of terms. I shoulda said "average managing".

    If a shooter did it themselves it would be "cheating". If the organization does it for him it's "average purification".

    Just consider this as an observation, nothing more. End of input. I'm going fishing...need supper.

    Keller
  19. 870

    870 Active Member

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    You still don't get it. What does "if the shooter did it themselves it would be cheating" have to do with yardage reductions? Yardage reductions are the only place "purified average" comes into play in ATA rules.

    The OP is describing a situation that has nothing to do with "purified average."
  20. motrap

    motrap Member

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    Yes, perga1 - Exactly what I said

    "There is no "CLASSIFICATION" with reference to Handicap events ....... 635G must be referencing Singles and/or Doubles .........

    ........ then went on to explain what many classifiers do (calling it "Purified Average" ) to get a better/more accurate classification (in their opinion) ...... not necessarily condoned by ATA ....

    Rudy
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