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International Journal of Interdisciplinary Research

Table 4 Regression equation formed in terms of coded values for Oleophobol CPR

From: Soil release performance of cotton finished with oleophobol CPR and CMC-Na salt

Response (Y)

Regression equation with all factors

R 2

Adj. R 2

F- value

Soil release rating (Y1)

Y1 = 4.667 + 0.458(X1)- 0.333(X2) + 0.250(X3) + 0.125(X4)-0.167(X1)2 - 0.354(X2)2 - 0.229 (X3)2 - 0.042(X4)2 - 0.125(X1*X2)- 0.125(X2*X4)-0.125(X1*X3) + 0.125(X3*X4) + 0.125(X1*X4)

0.902

0.787

7.868

K/S value (Y2)

Y2 = 0.029 - 0.005(X1) + 0.003 (X2) - 0.002(X3) - 0.002(X4) + 0.002(X1)2 + 0.003(X2)2 + 0.001(X3)2 + 0.002(X1*X2) -0.001(X2*X3) + 0.001(X1*X3) – 002(X1*X4)

0.926

0.84

10.725