© 2004 Cayman Business
Systems
Rev:
Pre-G3 - Rendered Thursday,
February 12, 2004
Slide 43
Elsmar.com --- The
Cove!
8-Disciplines Problem Solving
Elsmar.com
Distributions From Variation
Sometimes you can look at two
slices of pie and tell which is bigger. Sometimes
you cannot.
Home Experiment: Slice a pie
up into what you think are equal sized pieces and
line them up according to size. Many look
the same. If we want to arrange the pieces according
to size, we need another way to tell how big each piece
is. A weight scale will do quite well. Now - lets
look at what we would find if we weighed each
piece.
There are big and little
pieces, but you can see that the number of
pieces in each step of the graph (weight group)
varies from the largest piece to the smallest piece in a fairly regular and symmetrical pattern. This is the Distribution of the weights. The curve is what we would expect if the Distribution was a ‘Normal’ distribution.
Imagine doing this
with 100 pies!
