Pineapple Bark Performance in Dyes Adsorption: Optimization by the Central Composite Design

Table 3

Experimental matrix.

Experience	Variables			Response
	X1	X2	X3	Y
1	−1	−1	−1	77.01
2	1	−1	−1	76.81
3	−1	1	−1	98.75
4	1	1	−1	98.45
5	−1	−1	1	85.42
6	1	−1	1	90.13
7	−1	1	1	90.75
8	1	1	1	99.70
9	−1.68	0	0	85.15
10	1.68	0	0	92.18
11	0	−1.68	0	75.55
12	0	1.68	0	99.52
13	0	0	−1.68	90.25
14	0	0	1.68	95.70
15	0	0	0	97.30
16	0	0	0	97.18
17	0	0	0	97.25