Environmental Engineering Reference
In-Depth Information
1
1
0.9
0.9
0.8
0.8
0.7
0.7
0.6
0.6
0.5
0.5
0.4
0.4
0.3
0.3
0.2
0.2
0.1
0.1
0
0
1
10
100
1
10
100
1000
Cu (mg/kg)
Pb (mg/kg)
1
1
0.9
0.9
0.8
0.8
0.7
0.7
0.6
0.6
0.5
0.5
0.4
0.4
0.3
0.3
0.2
0.2
0.1
0.1
0
0
0
2
4
6
8
10
12
14
16
18
1
10
100
Co (mg/kg)
Ni (mg/kg)
Fig. 4.4
Estimated spatial cumulative distribution functions of Cu, Pb, Co and Ni in topsoils of
the Netherlands
Fig. 4.5
Estimation of median Pb concentration and its 95% confidence interval in peat soils at
Mijdrecht from stratified simple random sample, see Fig.
4.2
4.2.2.4 Median and Other Percentiles
The median and any other percentile (quantile) can be estimated by inverse use
of the estimated SCDF. Confidence bounds for the estimated percentiles can be
obtained via the estimated confidence bounds for the cumulative frequencies, see
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