Modeling Growth and Yield of Schizolobium amazonicum under Different Spacings

Table 2

Statistics obtained for the equations fitted for Strategies A and B.

Equation	𝑏0	𝑏1	𝑏2	𝑏3	𝑅^2	Bias	Bias%	RMSE	RMSE%
Strategy A
𝐺𝐻𝐴	0.00833*	0.49123*	0.83234*	—	96.22	−0.00	−0.04	0.65	8.12
𝐻𝐷	21.8048*	1.82404*	0.43105*	—	90.29	0.00	0.00	1.17	6.11
𝑁𝐻𝐴1	−1.17060*	5.84740*	—	—	97.47	1.35	0.15	61.33	7.19
𝐺𝐻𝐴2	2.49066*	0.04539^ns	—	—	84.29	−0.09	−0.62	2.19	15.24
𝑇𝑉𝐻𝐴2	1.89341*	0.03478*	1.91035*	0.7381*	92.15	−0.11	−0.09	15.94	12.29
𝑀𝑉𝐻𝐴2	1.36699*	0.06832*	−0.29629^ns	0.5456*	89.12	−0.41	−0.78	8.59	16.20
Strategy B
𝑁𝐻𝐴2	−2.0848*	2.0356*	—	—	97.46	1.81	0.21	58.42	7.07
𝐺𝐻𝐴	0.00523*	1.45720*	0.53967*	—	92.57	−0.02	−0.19	1.51	10.47
𝑇𝑉𝐻𝐴	1.22839*	0.93941*	0.71858*	—	99.58	−0.06	−0.04	3.68	2.84
𝑀𝑉𝐻𝐴	0.03388*	0.69131*	1.83907*	—	96.29	−0.15	−0.28	5.01	9.46

∗Significant at the 1% probability level by the 𝑡-test.
^nsNot significant at the 5% probability level by the 𝑡-test.