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. 2018 Feb 26;8(3):152. doi: 10.1007/s13205-018-1174-6

Table 8.

Analysis of variance for triterpenoids extraction from Swertia chirata using central composite design criterion

Source df Seq SS Adj SS Adj MS F P
Regression 9 5.39781 5.39781 0.59976 46.97 0.000
Linear 3 3.49235 3.49235 1.16412 91.17 0.000
Square 3 1.71326 1.71326 0.57109 44.73 0.000
Interaction 3 0.19220 0.19220 0.06407 5.02 0.022
Residual error 10 0.12769 0.12769
Lack of fit 5 0.10635 0.01277 0.02127 4.99 0.051
Pure error 5 0.02133 0.10635 0.00427
Total 19 5.52550 0.02133

R-Sq = 97.69% R-Sq(pred) = 84.79% R-Sq(adj) = 95.61%