RE: Random selection of 10%

There were some great responses to your q.

However, wouldn't you be more interested in expensive or commonly defective packages?

For example:

20 boxes flow down the line. 18 contain popcorn, one contains a diamond ring (big $$$$) and one contains that 12-pack of candy boxes that is supposed to be broken down by the order pickers as one box.

Wouldn't mgmt be interested in skewing the inspections towards the diamond and the candy?

With a random #, unfortunately the popcorn would get almost all the inspections!

Kind of like TSA at the airport when they frisk the old lady and let others walk thru!




-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Bill Reger
Sent: Wednesday, January 30, 2013 10:09 AM
To: midrange-l@xxxxxxxxxxxx
Subject: Random selection of 10%

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