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International Journal of Interdisciplinary Research

Table 3 Regression equation for DP rating in terms of coded values for modified DMDHEU

From: Assessment of durable press performance of cotton finished with modified DMDHEU and citric acid

Response (Y)

Regression equation with all factors

R

R2

Adj. R2

F value

DP rating

Y = + 3.267 + 0.233 (X1) + 0.129 (X2) − 0.012 (X3) − 0.017 (X4) + 0.146 (X5) + 0.050 (X6) − 0.146 (X1)2 − 0.125 (X2)2 − 0.004 (X3)2 − 0.071 (X4)2 + 0.125 (X5)2 + 0.033 (X6)2 − 0.050 (X1*X2) − 0.063 (X2*X3) − 0.050 (X2*X4) + 0.019 (X2*X5) − 0.025 (X2*X6) − 0.075 (X1*X3) − 0.075 (X3*X4) + 0.038 (X3*X5) + 0.050 (X3*X6) − 0.063 (X1*X4) + 0.050 (X4*X5) − 0.050 (X4*X6) + 0.025 (X1*X5) + 0.050 (X5*X6) − 0.075 (X1*X6)

0.933

0.87

0.735

6.45

  1. X1 modified DMDHEU (gpl), X2 MgCl2 (% ow modified DMDHEU), X3 SS (gpl), X4 PE (gpl), X5 curing temperature (°C), X6 curing time (minute)