From: Re-examining hypotheses concerning the use and knowledge of medicinal plants: a study in the Caatinga vegetation of NE Brazil
Herbs1
Non-herbs2
Native Forests3
Anthropogenic Zones4
Mean
0.1367
0.3567
0.3533
0.0767
Standard deviation
0.1260
0.2478
0.2264
0.0372
Variance
0.0159
0.0614
0.0512
0.0014
Coefficient of variance
92.21%
69.46%
64.06%
48.47%