pcr june 08 answer to q 1.2 b

taskeytaskey Font Of All KnowledgePosts: 1,800Registered
looking at the answers, why would i gross the production required by (0.5/99.5), just a tad confused.


Thanks

Tracy

Comments

  • CathGCathG Well-Known Posts: 145Registered
    The data at the beginning tells us that there's wastage:

    '1 in every 200 units is rejected by quality control'

    so that has to be built in production to get the number of 'good' units needed.
  • SandyHoodSandyHood Font Of All Knowledge Posts: 2,034Registered, Moderator
    1/200 is as you rightly identified 0.5%

    I would expect the current examiner to use much bigger wastage % rates
    1. they are more realistic
    2. they enable him to quickly see which candates are working out the wastage correctly a lot more easily (1/200 and 1/199 are very close together but 20/80 and 20/100 are easily identiable as different)
    Sandy
    [email protected]
    www.sandyhood.com
  • taskeytaskey Font Of All Knowledge Posts: 1,800Registered
    thanks Sandy

    I am even more confused now, as at the beginning of the answer the wastage of 50 was removed, then put back on again. why would this happen.

    Thanks

    Tracy
  • SandyHoodSandyHood Font Of All Knowledge Posts: 2,034Registered, Moderator
    Sadly, there are a lot of misleading model answers

    I have an answer available if you email me with the following (exactly) as the subject:
    Sandy's PCR Answer June 2008
    Sandy
    [email protected]
    www.sandyhood.com
  • mark130273mark130273 Font Of All Knowledge Posts: 4,234Registered
    ive found that these questions you have to look at production isonly at 95% beacause off the wastage ... so if they need 950 good ones, then you need to produce 1000 ?

    tok a while for that to set in !
  • taskeytaskey Font Of All Knowledge Posts: 1,800Registered
    i get that bit mark, it is just, you take off the wastage, work stuff out, then add it back on again.

    AARRGGHH

    Tracy
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