1. The table below shows the gold grade results from a core drilling program undertaken on a regular 100m x 100m grid.
|
Gold ore q/tonne Au at coordinate values
|
|
Northing
coordinate (m)
|
|
Easting Coordinate (m)
|
|
|
0
|
100
|
200
|
300
|
400
|
500
|
600
|
700
|
|
0
|
6
|
5.5
|
7
|
7.2
|
7.3
|
5
|
7
|
4.8
|
|
100
|
8
|
8
|
8
|
7
|
11
|
11
|
10
|
8
|
|
200
|
6
|
6
|
6.6
|
11
|
13
|
13
|
8
|
7
|
|
300
|
5
|
9
|
8
|
12
|
15
|
14
|
12
|
9
|
|
400
|
7
|
6
|
7.2
|
9
|
7
|
13
|
10
|
8
|
|
500
|
5.5
|
7
|
6
|
8
|
9
|
12
|
8
|
7
|
|
600
|
6
|
8
|
5.5
|
6
|
5
|
7
|
8
|
6
|
|
700
|
6.5
|
7
|
8
|
7
|
4
|
5
|
5
|
4
|
Undertake classical statistics on this data set, calculating the mean, variance and standard deviation.
2. Using the data from question 1, determine experimental variograms in the west to east and north to south directions.
3. Use ordinary kriging to estimate the grade at the location 375m East, 350m North.