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Data Analysis and Statistics for Geography, Environmental Science, and Engineering
book

Data Analysis and Statistics for Geography, Environmental Science, and Engineering

by Miguel F. Acevedo
December 2012
Beginner content levelBeginner
557 pages
19h 5m
English
CRC Press
Content preview from Data Analysis and Statistics for Geography, Environmental Science, and Engineering
235Stochastic or Random Processes and Time Series
0510 15 20
−0.4
0.0
0.4
0.8
Lag
ACF
0510 15 20
−500
0
500
1000
Lag
ACF (cov)
FIGURE 7.12 Autocorrelation plot of sunspots series.
Time (years)
x
510152
02
5
6
8
10
12
14
0.0 0.5 1.0 1.5 2.0
−0.5
0.0
0.5
1.0
Lag
ACF
FIGURE 7.13 Periodic process and ACF.
236 Data Analysis and Statistics for Geography, Environmental Science, and Engineering
Time (years)
x
510152
02
5
6
8
10
12
14
Time (years)
xf = x ltered
510152
02
5
8
9
10
11
12
Time (years)
x−xf residual
510152
02
5
−3
−2
−1
0
1
2
FIGURE 7.14 Low-pass ltering of periodic process.
Time (years)
x
510152
02
5
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Publisher Resources

ISBN: 9781439885017