Page 359 - Six Sigma Demystified

Part 3 S i x S i g m a To o l S 339

Figure F.37 Example of a competitor evaluation matrix.

Figure F.37 is an example of a competitor evaluation. Each of the competi-
tors is rated for each customer requirement from 1 (low) to 5 (high).
Beneath the relationship matrix in Figure F.38 is the target row, where you
will enter the desired value for the how. Conveniently listed beneath this is the
competitor row for indicating a score for the competition’s best solution for
that how. The last row beneath the relationship matrix is the importance rat-
ings. These are calculated by first calculating each cell’s importance by multi-

plying each relationship score (the cell) by the importance rating for that what.
We then sum these for each column to get the importance for that how. We
also can rank order the hows, where a value of 1 is given to the highest impor-
tance rating, indicating the most important how.
In Figure F.38, the values provided above for both the target and competitor
are defined using a common metric specific to each operational requirement.
For example, the target value for number of wait staff is defined using a staff-
to-table ratio (1 staff for every 2.5 tables), whereas the menu target is defined
using an average entrée price.
The importance score for each operational requirement is also shown. We
calculate the importance value for the number of wait staff using the sum of
the importance times the relationship score as follows: