Re: Random selection of 10%

["Raul A. Jager W." <raul@xxxxxxxxxx>]

An aesy way will be to get/build a "decahedron" and mark one face. Trow 
it and audit the case if the mark comes up.  Other choice is an 
"icoshedron" (is regular) and mark two faces.

A more technical (not necesarily better) is to use a random number 
generator and audit when the number comes up less or equal than 1/10nth 
of the max.

Bill Reger wrote:

> We would like to audit 10% of the Cases that flow down the shipping
> conveyor - checking that the contents of the Case matched what was
> (supposedly) packed.
>
> Now obviously we could count each Case and pull every 10th Case for audit.
> But it would not take long for someone to figure this out - and if they
> were so inclined - only short Cases other than the 10th in line.
>
> Is there an algorithm/logic that we could employ to randomly pull Cases
> that would equate to 10% over the course of a day but not be every 10th
> Case?  (My logic brain is on strike today and I can't think of a way to
> design this.)
>
> Bill
>