43
a.
b.
c.
55
50
45
40
35
30
25
20
15
10
5
1
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
MAPE 83.0988
MAD
0 .3656
MSD
0 .3106
Accuracy Measures
n
As
0.42
Actual
Fits
Variable
Spatial Analysis Plot for As
Linear Trend Model
As = 0.533 + 0.00314×n
55
50
45
40
35
30
25
20
15
10
5
1
3.0
2.5
2.0
1.5
1.0
0.5
0.0
MAPE 74.9526
MAD
0 .3090
MSD
0 .2914
Accuracy Measures
n
As(N)
0.295
Actual
Fits
Variable
Spatial Analysis Plot for As(N)
Linear Trend Model
As(N) = 0.333 + 0.00532×n
45
40
35
30
25
20
15
10
5
1
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
MAPE 192.141
MAD
0 .387
MSD
0 .348
Accuracy Measures
n
As_1
0.21
Actual
Fits
Variable
Spatial Analysis Plot for As_1
Linear Trend Model
As_1 = 0.595 - 0.00595×n
Fig. 2.2 The spatial analysis plot (linear model) of As. (a) 2015 AMS data, (b) 2010 AMS data
and (c) 2015 AMS Li normalized data
2 Spatial Series and Multivariate Analysis in Assessing the Essential (Cu and Zn…