Equation Calculation Steps - C-Dax pasture meter+ Operation Manual

Equation Calculation Steps

Step 1 - Calculate total and Avg. For columns A & B
➢ Calculate (G) = Sum of Column A (i.e. 25 + 40 + ... = 250)
➢ Calculate (H) = Sum of Column B (i.e. 1200 + 2350 + ... = 7800)
➢ Calculate (I) = G ÷ No. of Samples (i.e. 250 ÷ 5 = 50)
➢ Calculate (J) = H ÷ No. of Samples (i.e. 7800 ÷ 5 = 1560)
Step 2 – Subtract the averages (I & J) from each entry
➢ Calculate values for Column C = A – I (i.e. 10 – 50 = -40)
➢ Calculate values for Column D = B – J (i.e. 1200 – 1560 = -360)
Step 3 – Calculate Column E
➢ Square each entry in Column C (i.e. -40 x -40 = 1600)
Step 4 – Calculate Column F
➢ Multiply each entry in Column C by its corresponding entry in Column D
(i.e. -40 x -360 = 14400)
Step 5 – Add up columns E & F and record in cells K & L respectively
Step 6 – Calculate parameters to use in pasture equation
➢ Calculate Slope of line (Factr)
➢ Calculate the Constant (Const) N = J – (M x I)
A
Pasture
Sample
Pasture Height
(mm)
Example
40
1
2
3
4
5
G
Sum
I
Average
M
Eq. Slope
N
Eq. Constant
M = L ÷ K
B C
Pasture Cover
(A - I)
(kgDM/ha)
-40
1500
H
J
D E
2
(B - J) (C )
-360 1600
K L
F
(C x D)
14400
28