Vol. 4, No. 9
Iffy Products and its quality manager,
Bjorn Luzer, are in trouble. After Bjorn hired ten inspectors to assure
the quality of the company's products, two have already quit. E.
Stiseest and Wes Tiswest left in the middle of their shifts, angry about
the demands that Bjorn had placed on them to be on time for work. In
addition, Bjorn had been forced to fire two others, Hal Zangels and Dee
Mented, when he found them sound asleep behind the production
line'twice. "I just don't know why we can't attract qualified
employees," Bjorn Luzer groused, forgetting for a moment that he
had absolutely no qualifications for his own job.
The four remaining quality inspectors are
working overtime to be sure that every single product will be adequately
inspected. In the midst of this frenetic activity, Bjorn has been
informed that a customer insists that Iffy provide SPC data for the
shafts that the company manufactures, complaining that the part number
on the shaft is unreadable or has been truncated. Instead of training
his inspectors to apply SPC to the parts rather than relying only on
their own visual inspection, Bjorn realizes that he can demonstrate his
statistical prowess and solve the problem himself.
Bjorn mentions to his boss that he can
produce a p chart, since this situation demands attributes charting.
Remembering that samples should be taken each hour, day, or shift (or
whatever period seems appropriate), and that the sample size should
remain constant for each of these samples, he can hardly wait to explain
to his enterprising group of inspectors how to calculate control limits.
This will really wow his boss:
Was Bjorn Luzer correct in this response,
or should he have responded in another way?
Copyright 2002 PQ Systems.
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