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Table 5 Goodness of fit statistics, and heteroskedasticity and normality tests of residuals for independently fitted models

From: Allometric equations for estimating belowground biomass of Androstachys johnsonii Prain

Model form #

Adj.R2 (%)

CVr (%)

MR (%)

White,s test for heteroskedasticity

Lilliefors normality test

χ2

p value

D

p value

Root collar

 1

98.22

42.91

−0.6582ns

10.2673

0.5925

0.0917

0.0518

 2

97.02

44.85

−0.9926ns

9.4548

0.6637

0.0761

0.2048

 3

97.43

44.80

−1.3605ns

8.9433

0.7078

0.0783

0.1728

 4

96.98

45.62

−1.4202ns

11.0543

0.5243

0.0800

0.1508

Taproot

 1

98.55

37.71

−0.0437ns

5.2695

0.9484

0.0420

0.9537

 2

98.68

37.21

−0.1412ns

3.5465

0.9903

0.0516

0.7859

 3

98.16

38.85

−0.2415ns

3.6553

0.9889

0.0413

0.9608

 4

98.57

37.50

0.0035ns

8.6969

0.7286

0.0621

0.5066

Lateral roots

 1

99.40

35.8213

0.0589ns

7.9210

0.7913

0.0801

0.1504

 2

99.44

33.8683

1.1136ns

6.0923

0.9114

0.0873

0.0771

 3

99.45

31.5039

0.1433ns

7.1091

0.8503

0.1289

0.0006

 4

99.26

38.5273

1.6894ns

6.3422

0.8979

0.0755

0.2146

Root system

 1

99.73

24.6597

0.0182ns

11.0001

0.5289

0.0562

0.6651

 2

99.78

23.4060

0.1110ns

9.9195

0.6230

0.0498

0.8249

 3

99.80

23.1551

1.3768ns

12.5144

0.4053

0.0470

0.8808

 4

99.79

28.8790

0.1124ns

16.2835

0.1786

0.0480

0.8620

  1. D Lilliefors statistic, ns not statistically significant at α = 0.05.