Adding Repetitions

The power of a DOE can easily increased by adding repetitions. This can be done on 2 ways.

1. Use an extra column for repetitions

Fill in the measurement data in the input table. In this case there is one replicate. As you can see in the example the amount test for each level is 8 instead of 4. But now you can not use the other columns for different results on the same samples.

Data file

2. Replicate the whole test array

Below a L9 array is replicated 3 times.

Test	Orthogonal Array L9, 3 repetitions
	Factor 1	Factor 2	Factor 3	Factor 4	Repetition
1	-1	-1	-1	-1	First
2	-1	0	0	0
3	-1	1	1	1
4	0	-1	0	1
5	0	0	1	-1
6	0	1	-1	0
7	1	-1	1	0
8	1	0	-1	1
9	1	1	0	-1
10	-1	-1	-1	-1	Second
11	-1	0	0	0
12	-1	1	1	1
13	0	-1	0	1
14	0	0	1	-1
15	0	1	-1	0
16	1	-1	1	0
17	1	0	-1	1
18	1	1	0	-1
19	-1	-1	-1	-1	Third
20	-1	0	0	0
21	-1	1	1	1
22	0	-1	0	1
23	0	0	1	-1
24	0	1	-1	0
25	1	-1	1	0
26	1	0	-1	1
27	1	1	0	-1

Now it is possible to add 10 different properties of the sample in the columns for analysis.
Here you can see how to select the L9 Orthogonal array with 3 repetitions. The amount of repetitions can be set for all the type of arrays.


As you can see in the image below 2 properties or the samples are filled in and the Temp is selected with Use result Column Selection B.

Data file