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. 2019 Summer;18(3):1180–1195. doi: 10.22037/ijpr.2019.1100776

Table 3.

Analysis of variance for response quadratic model

Encapsulation efficiency (%)
Source Sum of Square df* Mean Square F-value Prob > F
Model 2833.00 9 314.78 51.40 < 0.0001**
X1 239.04 1 239.04 39.03 0.0004**
X2 1696.82 1 1696.82 277.06 < 0.0001**
X3 58.10 1 58.10 9.49 0.0178**
X1X2 148.11 1 148.11 24.18 0.0017**
X1X3 43.10 1 43.10 7.04 0.0328**
X2X3 23.77 1 23.77 3.88 0.0895
X1
2
60.42 1 60.42 9.86 0.0164**
X2
2
506.98 1 506.98 82.78 < 0.0001**
X3
2
18.93 1 18.93 3.09 0.1221
Residual 42.87 7 6.12
Lack of Fit 30.71 3 10.24 3.37 0.1358
Pure Error 12.16 4 3.04

* Degree of freedom.

** Significant at 0.05 level.