Page 63 - مراقبة_merged_Neat4فنادق ثان

Quality and Food Safety Management in Food
Service Industry

with their experience, than McDonald's achieved six sigma on
that day. This is because six sigma is equivalent to only 3.4 bad
customer experiences for every million opportunitities. Six
sigma originated in the 1980s at Motorola. In the early 1990s, it
migrated to Allied Signal and in the mid-1990s; General
Electric adopted it as their premier management philosophy.

Six sigma is the definition of out comes as close as
possible to perfection. With six standard deviations, we arrive
at 3.4 defects per million opportunities or 99.9996 percent. This
would mean that at six sigma an airline would lose only three
pieces of luggage for every one million that it.

Some common methodologies are define, measure,
analyze, improve, and control (DMAIC) and define, measure,
analyze, design and verify (DMADV). The DMAIC process is
"an improvement system for exiting processes falling below
specification and looking for incremental improvement". The
DMADV process is "another system used to develop new
processes or products at six sigma quality levels".

The key success factors differencing six sigma from TQM
are:

1. The emphasis on statistical science and measurement.