. 2014 Apr 27;52(5):2634–2645. doi: 10.1007/s13197-014-1378-7

Table 6.

Correlation coefficient between system parameters and product responses

	Pressure	Torque	Expansion	Density	WSI	WAI	Hardness
Pressure	1	0.571*	0.432^ns	−0.658*	−0.235^ns	0.020^ns	−0.350^ns
Torque		1	−0.099^ns	−0.365^ns	−0.368^ns	0.391^ns	0.087^ns
Expansion			1	−0.717*	0.658*	−0.710*	−0.908*
Density				1	−0.344^ns	0.348^ns	0.834*
WSI					1	−0.729*	−0.699*
WAI						1	0.721*
Hardness							1

*Significant at P < 0.01; ^ns Not significant