Table 2. Analysis of variance for extraction yields of Bidens pilosa L.

Source	Sum of squares	Gl	Middle square	F-Reason	P-Value
MAIN EFFECTS
A: Drying temperature	152.867	1	152.867	1.23	0.3827
B: Extraction process	354.869	2	177.434	1.43	0.4117
C: Solvent	2890.76	1	2890.76	23.28	0.0404
INTERACTIONS
AB	81.3555	2	40.6778	0.33	0.7532
AC	245.979	1	245.979	1.98	0.2946
BC	208.387	2	104.194	0.84	0.5437
WASTE	248.338	2	124.169
TOTAL (CORRECTED)	4182.55	11