Table 7 Statistical model summary of citric acid and effersoda on friability
Source of variation | DF | Adj Sum of square | Adj Mean square | F value | P value summary | |
|---|---|---|---|---|---|---|
Value | Significant | |||||
Model | 6 | 0.592752 | 0.098792 | 119.27 | 0.000 | Model significant |
Linear | 2 | 0.150733 | 0.075367 | 90.99 | 0.000 | |
Citric acid | 1 | 0.091740 | 0.091740 | 110.75 | 0.000 | |
Effersoda | 1 | 0.058994 | 0.058994 | 71.22 | 0.000 | |
Square | 2 | 0.395729 | 0.197865 | 238.88 | 0.000 | |
Citric acid (mg)*citric acid (mg) | 1 | 0.150393 | 0.150393 | 181.56 | 0.000 | |
Effersoda*effersoda | 1 | 0.274239 | 0.274239 | 331.08 | 0.000 | |
2-way interaction | 1 | 0.046225 | 0.046225 | 55.81 | 0.000 | |
Citric acid (mg)*effersoda | 1 | 0.046225 | 0.046225 | 55.81 | 0.000 | |
Lack-of-fit | 3 | 0.004332 | 0.001444 | 3.94 | 0.109 | Lack-of-fit not significant |
Model summary | ||||||
S | R-sq | R-sq (adj) | R-sq (pred) | |||
0.0287805 | 99.03% | 98.02% | 93.92% | |||