Adding a Signal Factor to an Existing Static Design
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When you add a signal factor to an existing static design, Minitab adds a new signal factor column after the factor columns and appends new rows (replicates) to the end of the existing worksheet. For example, if you add a signal factor with 2 levels to an existing L4 (2**3) array, 4 rows (1 replicate of 4 runs) are added to the worksheet; if you add a signal factor with 3 levels, 8 rows (2 replicates of 4 runs) are added to the worksheet. A replicate is the complete set of runs from the initial design.

Static design
(No signal factor)

Dynamic design
(Added signal factor with 2 levels)

Dynamic design
(Added signal factor
with 3 levels)

A  B 

1   1 

1   2 

2   1 

2   2 

A   B   Signal factor 

1   1        1 

1   2        1 

2   1        1 

2   2        1 

 

1   1        2

1   2        2 

2   1        2 

2   2        2 

A   B   Signal factor 

1   1        1 

1   2        1 

2   1        1 

2   2        1 

 

1   1        2

1   2        2 

2   1        2 

2   2        2 

 

1   1        3

1   2        3 

2   1        3 

2   2        3 

Note

When you add a signal factor to an existing static design, the run order will be different from the order that results from adding a signal factor while creating a new design. The order of the rows does not affect the Taguchi analysis.