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Table 1 Relationship of species abundance, life form and importance as medicinal plants, analyzed with a linear regression model (analysis of variance of the regression)

From: Ecological apparency, ethnobotanical importance and perceptions of population status of wild-growing medicinal plants in a reserve of south-central Mexico

 

Source

DF

Sum of Square

Mean square

Β

F Statistic

P-value

All forms of life

Regression

1

1.0543

1.0543

0.39, p < 0.001

11.8333 (1,49)

0.0012

Residual

49

4.3656

0.0890

   

Total

50

5.4199

0.1084

   

Herbs

Regression

1

0.6403

0.6403

0.54, p < 0.001

7.9193 (1,19)

0.0110

Residual

19

1.5363

0.0808

   

Total

20

2.1767

0.1088

   

Shrubs/liana

Regression

1

0.8144

0.8144

0.71, p = 0.026

7.4322 (1,8)

0.0260

Residual

8

0.8766

0.1096

   

Total

9

1.6911

0.1879

   

Trees

Regression

1

0.1079

0.1079

− 0.41, p = 0.170

2.0459 (1,18)

0.1697

Residual

18

0.9494

0.05274

   

Total

19

1.0573

0.05565

   
  1. * An outlier, Heliocarpus parvimontis, a tree, was excluded from the regression model