●Affinity diagram
An “affinity diagram” is a way of summarizing mutual affinities between
data, organizing data into named groups, and analyzing data. It can elucidate vague problems and clarify trouble-spots.
Declining sales
Product
Negotiations with customers
Not making proposals that
respond to customer needs
Few products in
line with needs
Not knowing key
decision-makers
High prices compared
to competitors
Not following up
periodically
●Matrix diagram
A “matrix diagram” organizes elements to be analyzed into rows and columns, marks their relationships at their intersections to define the existence
and form of a problem, and sparks ideas that lead to solutions. Viewing
these intersections as starting points for ideas is an effective way to solve
problems.
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Company name
Skill
Service
Delivery date
Cost
Company A
Excellent
OK
Good
Bad
Company B
OK
Good
Good
OK
Company C
Bad
OK
Bad
Excellent
Company D
Excellent
OK
Bad
Good
Company E
Good
Excellent
OK
Good