Replicate design

Stat > DOE > Modify Design > Replicate design > Specify

This topic applies to screening designs, factorial designs, response surface designs, and mixture designs.

Replicate the design to estimate effects more precisely. Each replicate duplicates all the runs that are in the worksheet, including the center points. For more information, go to Replicates and repeats in designed experiments. For more information on replicates with blocks, go to What is a block?.

Note

Because the order from the worksheet is the same for each replicate, modify the design a second time to randomize it after you add the replicates. For more information, go to Randomize design.

The following tables show a base design and the base design with an additional replicate.

Base design

C1	C2	C3	C4	C5	C6
StdOrder	RunOrder	CenterPt	Blocks	Temperature	Pressure
5	1	0	1	35	100
1	2	1	1	25	50
4	3	1	1	45	150
2	4	1	1	45	50
3	5	1	1	25	150

Base design with 1 replicate added

C1	C2	C3	C4	C5	C6
StdOrder	RunOrder	CenterPt	Blocks	Temperature	Pressure
5	1	0	1	35	100
1	2	1	1	25	50
4	3	1	1	45	150
2	4	1	1	45	50
3	5	1	1	25	150
10	6	0	2	35	100
6	7	1	2	25	50
9	8	1	2	45	150
7	9	1	2	45	50
8	10	1	2	25	150