A Study of the Ionic Liquid-Based Ultrasonic-Assisted Extraction of Isoliquiritigenin from Glycyrrhiza uralensis

Table 2

The credibility analysis of the regression equations.

Index mark^a	Extraction efficiency of isoliquiritigenin
Std. dev.	0.025
Mean	0.44
C.V.%	5.74
PRESS	0.028
-squared	0.9799
Adj -squared	0.9541
Pred -squared	0.8758
Adeq precision	21.783