Distance Elevation LandUse Flooding Cadmium LogCadmium 400 8.7 Crops 1 1.3 0.114 630 9.0 Crops 1 1.5 0.176 150 8.5 Pasture 2 2.4 0.380 100 7.9 Crops 1 4.2 0.623 480 8.2 Crops 1 1.7 0.230 20 7.4 Pasture 1 7.3 0.863 130 6.5 Crops 1 3.5 0.544 400 9.0 FruitTrees 1 1.4 0.146 290 7.8 FruitTrees 3 0.8 -0.097 860 9.0 Crops 2 0.8 -0.097
|
Distance |
Elevation |
LandUse |
Flooding |
Cadmium |
LogCadmium |
|
400 |
8.7 |
Crops |
1 |
1.3 |
0.114 |
|
630 |
9.0 |
Crops |
1 |
1.5 |
0.176 |
|
150 |
8.5 |
Pasture |
2 |
2.4 |
0.380 |
|
100 |
7.9 |
Crops |
1 |
4.2 |
0.623 |
|
480 |
8.2 |
Crops |
1 |
1.7 |
0.230 |
|
20 |
7.4 |
Pasture |
1 |
7.3 |
0.863 |
|
130 |
6.5 |
Crops |
1 |
3.5 |
0.544 |
|
400 |
9.0 |
FruitTrees |
1 |
1.4 |
0.146 |
|
290 |
7.8 |
FruitTrees |
3 |
0.8 |
-0.097 |
|
860 |
9.0 |
Crops |
2 |
0.8 |
-0.097 |
|
150 |
8.1 |
Pasture |
3 |
0.8 |
-0.097 |
|
150 |
7.8 |
Crops |
1 |
6.5 |
0.813 |
|
200 |
6.4 |
Crops |
1 |
4.3 |
0.633 |
|
630 |
7.7 |
Crops |
2 |
0.4 |
-0.398 |
|
410 |
9.5 |
Pasture |
2 |
1.2 |
0.079 |
|
10 |
7.0 |
Pasture |
1 |
8.7 |
0.940 |
|
20 |
6.9 |
Pasture |
1 |
14.1 |
1.149 |
|
10 |
7.4 |
FruitTrees |
1 |
8.3 |
0.919 |
|
260 |
8.7 |
Pasture |
1 |
1.7 |
0.230 |
|
360 |
6.9 |
Crops |
1 |
2.7 |
0.431 |
|
70 |
8.5 |
Crops |
2 |
0.2 |
-0.699 |
|
140 |
9.0 |
Crops |
1 |
2.8 |
0.447 |
|
20 |
7.3 |
Pasture |
1 |
11.2 |
1.049 |
|
550 |
9.6 |
Crops |
2 |
0.2 |
-0.699 |
|
260 |
6.3 |
Crops |
1 |
3.1 |
0.491 |
|
440 |
9.0 |
Crops |
1 |
1.7 |
0.230 |
|
430 |
8.7 |
Crops |
3 |
1.5 |
0.176 |
|
160 |
7.9 |
Crops |
2 |
1.8 |
0.255 |
|
450 |
9.8 |
Crops |
2 |
0.2 |
-0.699 |
|
520 |
8.6 |
Crops |
3 |
3.1 |
0.491 |
|
200 |
6.3 |
Pasture |
1 |
3.9 |
0.591 |
|
350 |
8.4 |
Crops |
3 |
2.1 |
0.322 |
|
560 |
7.6 |
FruitTrees |
1 |
0.7 |
-0.155 |
|
20 |
7.6 |
Pasture |
1 |
8.2 |
0.914 |
|
190 |
9.5 |
Crops |
2 |
0.2 |
-0.699 |
|
200 |
7.8 |
FruitTrees |
1 |
2.6 |
0.415 |
|
290 |
9.2 |
Crops |
3 |
0.2 |
-0.699 |
|
320 |
6.6 |
Pasture |
1 |
3.9 |
0.591 |
|
10 |
7.2 |
Crops |
1 |
6.8 |
0.833 |
|
80 |
5.7 |
Pasture |
1 |
6.3 |
0.799 |
|
120 |
7.7 |
Crops |
3 |
3.1 |
0.491 |
|
760 |
9.9 |
Crops |
2 |
0.4 |
-0.398 |
|
540 |
10.0 |
Crops |
3 |
0.8 |
-0.097 |
|
680 |
9.9 |
Crops |
2 |
0.2 |
-0.699 |
|
750 |
9.1 |
Crops |
2 |
0.2 |
-0.699 |
|
390 |
8.7 |
Crops |
1 |
1.3 |
0.114 |
|
680 |
10.1 |
Crops |
3 |
0.2 |
-0.699 |
|
100 |
9.5 |
Crops |
2 |
0.4 |
-0.398 |
|
80 |
8.9 |
Crops |
1 |
5.5 |
0.740 |
|
300 |
9.1 |
Crops |
1 |
1.8 |
0.255 |
|
530 |
9.6 |
Crops |
2 |
0.2 |
-0.699 |
|
80 |
7.3 |
Pasture |
3 |
3.8 |
0.580 |
|
120 |
7.5 |
Pasture |
3 |
3.2 |
0.505 |
|
170 |
7.5 |
Crops |
1 |
2.4 |
0.380 |
|
340 |
7.0 |
Crops |
1 |
3.0 |
0.477 |
|
240 |
8.7 |
Crops |
1 |
2.4 |
0.380 |
|
10 |
7.4 |
Pasture |
1 |
9.4 |
0.973 |
|
650 |
9.7 |
Crops |
2 |
0.2 |
-0.699 |
|
130 |
8.8 |
Crops |
1 |
2.5 |
0.398 |
|
710 |
8.3 |
Crops |
1 |
1.7 |
0.230 |
|
500 |
8.8 |
Pasture |
2 |
0.4 |
-0.398 |
|
10 |
7.7 |
Pasture |
1 |
9.5 |
0.978 |
|
310 |
7.9 |
Pasture |
3 |
2.0 |
0.301 |
|
490 |
9.0 |
Pasture |
1 |
1.4 |
0.146 |
|
320 |
8.5 |
Crops |
2 |
0.4 |
-0.398 |
|
10 |
7.9 |
Pasture |
1 |
12.0 |
1.079 |
|
270 |
6.2 |
Pasture |
1 |
2.9 |
0.462 |
|
500 |
9.4 |
FruitTrees |
2 |
0.2 |
-0.699 |
|
1000 |
9.1 |
FruitTrees |
2 |
0.2 |
-0.699 |
|
390 |
9.6 |
Crops |
2 |
0.2 |
-0.699 |
The data contains the following variables:
DistanceDistance of the site from the river (m)ElevationElevation of the site above the river bed (m)LandUseHow the land is used (Crops, FruitTrees or Pasture)FloodingFlooding frequency (coded as 1 for once in two years, 2 for once in ten years, 3 for once in fifty years)CadmiumSoil cadmium concentration (mg/kg)LogCadmiumlog10(Cadmium)
Question 1
The
7.90 m
8.25 m
8.45 m
9.03 m
Question 2
What is the shape of the elevation distribution?
Skewed to the right
Symmetric with outliers
Skewed to the left
Symmetric
Question 3
The distribution of cadmium concentration appears to be skewed to the right. The researchers decided to first log-transform these concentration values, to make the distribution more symmetric, giving the variable LogCadmium. What is the mean of this transformed variable for the sites used for growing fruit trees?
-0.0970
-0.0243
0.1100
0.9190
Question 4
The researchers wanted to know if there is a difference in the mean cadmium levels between the different land uses. What are the residual degrees of freedom in the one-way ANOVA to address this question?
2
67
68
69
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