Models

Regression formula

R²

Probability

Number of trees

Boscia senegalensis

Polynomial of order 2

Y = 0.0023x² + 0.48x – 0.05

0.85

43

Linear

Y = 0.65x – 2.32

0.85

Power

0.46*x (^1.03)

0.77

<0.0001

Exponential

3.97e (^0.04*x)

0.75

Logarithmic

14.91ln(x) – 31.11

0.67

Sclerocarya birrea

Polynomial of order 2

Y = 0.35x² + 10.35x – 12.9

0.94

15

Linear

Y = 24.84x – 137.95

0.94

Power

3.65*x (^1.5)

0.93

<0.0001

Exponential

60.97 e (^0.07*x)

0.92

Logarithmic

464.8ln(x) – 992.9

0.92