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Author's title

Author

*The author of this computation has been verified*

R Software Module

rwasp_spectrum.wasp

Title produced by software

Spectral Analysis

Date of computation

Thu, 22 Dec 2011 10:57:30 -0500

Cite this page as follows

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2011/Dec/22/t1324569474xjp3ml4ewcwhpm8.htm/, Retrieved Sat, 18 Apr 2026 02:21:45 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=159652, Retrieved Sat, 18 Apr 2026 02:21:45 +0000

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Original text written by user:

IsPrivate?

No (this computation is public)

User-defined keywords

Estimated Impact

328

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)

-     [Testing Mean with unknown Variance - Critical Value] [] [2010-10-25 13:12:27] [b98453cac15ba1066b407e146608df68]
- RMPD  [Multiple Regression] [] [2011-12-22 13:45:12] [5a05da414fd67612c3b80d44effe0727]
- RM D    [(Partial) Autocorrelation Function] [] [2011-12-22 15:18:49] [5a05da414fd67612c3b80d44effe0727]
- R         [(Partial) Autocorrelation Function] [] [2011-12-22 15:20:17] [5a05da414fd67612c3b80d44effe0727]
-             [(Partial) Autocorrelation Function] [] [2011-12-22 15:29:46] [5a05da414fd67612c3b80d44effe0727]
- RM              [Spectral Analysis] [] [2011-12-22 15:57:30] [95610e892c4b5c84ff80f4c898567a9d] [Current]

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Dataseries X:

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Histogram

Boxplots

7.9
7.9
8.0
8.0
7.9
8.0
7.7
7.2
7.5
7.3
7.0
7.0
7.0
7.2
7.3
7.1
6.8
6.4
6.1
6.5
7.7
7.9
7.5
6.9
6.6
6.9
7.7
8.0
8.0
7.7
7.3
7.4
8.1
8.3
8.1
7.9
7.9
8.3
8.6
8.7
8.5
8.3
8.0
8.0
8.8
8.7
8.5
8.1
7.8
7.6
7.4
7.1
6.9
6.7
6.6
6.5
7.1
7.2
6.9
6.7

Summary of computational transaction
Raw Input	view raw input (R code)
Raw Output	view raw output of R engine
Computing time	1 seconds
R Server	'Gertrude Mary Cox' @ cox.wessa.net

\begin{tabular}{lllllllll}
\hline
Summary of computational transaction \tabularnewline
Raw Input & view raw input (R code)  \tabularnewline
Raw Output & view raw output of R engine  \tabularnewline
Computing time & 1 seconds \tabularnewline
R Server & 'Gertrude Mary Cox' @ cox.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=159652&T=0

[TABLE]
[ROW][C]Summary of computational transaction[/C][/ROW]
[ROW][C]Raw Input[/C][C]view raw input (R code) [/C][/ROW]
[ROW][C]Raw Output[/C][C]view raw output of R engine [/C][/ROW]
[ROW][C]Computing time[/C][C]1 seconds[/C][/ROW]
[ROW][C]R Server[/C][C]'Gertrude Mary Cox' @ cox.wessa.net[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=159652&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=159652&T=0

As an alternative you can also use a QR Code:

The GUIDs for individual cells are displayed in the table below:

Summary of computational transaction
Raw Input	view raw input (R code)
Raw Output	view raw output of R engine
Computing time	1 seconds
R Server	'Gertrude Mary Cox' @ cox.wessa.net

Raw Periodogram
Parameter	Value
Box-Cox transformation parameter (lambda)	1
Degree of non-seasonal differencing (d)	2
Degree of seasonal differencing (D)	2
Seasonal Period (s)	12
Frequency (Period)	Spectrum
0.0278 (36)	0.00742
0.0556 (18)	0.067133
0.0833 (12)	0.015663
0.1111 (9)	0.984707
0.1389 (7.2)	1.233572
0.1667 (6)	0.642274
0.1944 (5.1429)	0.278983
0.2222 (4.5)	0.081054
0.25 (4)	0.034141
0.2778 (3.6)	0.301665
0.3056 (3.2727)	0.078525
0.3333 (3)	0.05575
0.3611 (2.7692)	0.145863
0.3889 (2.5714)	0.313202
0.4167 (2.4)	0.016433
0.4444 (2.25)	0.559162
0.4722 (2.1176)	0.602184
0.5 (2)	0.001531

\begin{tabular}{lllllllll}
\hline
Raw Periodogram \tabularnewline
Parameter & Value \tabularnewline
Box-Cox transformation parameter (lambda) & 1 \tabularnewline
Degree of non-seasonal differencing (d) & 2 \tabularnewline
Degree of seasonal differencing (D) & 2 \tabularnewline
Seasonal Period (s) & 12 \tabularnewline
Frequency (Period) & Spectrum \tabularnewline
0.0278 (36) & 0.00742 \tabularnewline
0.0556 (18) & 0.067133 \tabularnewline
0.0833 (12) & 0.015663 \tabularnewline
0.1111 (9) & 0.984707 \tabularnewline
0.1389 (7.2) & 1.233572 \tabularnewline
0.1667 (6) & 0.642274 \tabularnewline
0.1944 (5.1429) & 0.278983 \tabularnewline
0.2222 (4.5) & 0.081054 \tabularnewline
0.25 (4) & 0.034141 \tabularnewline
0.2778 (3.6) & 0.301665 \tabularnewline
0.3056 (3.2727) & 0.078525 \tabularnewline
0.3333 (3) & 0.05575 \tabularnewline
0.3611 (2.7692) & 0.145863 \tabularnewline
0.3889 (2.5714) & 0.313202 \tabularnewline
0.4167 (2.4) & 0.016433 \tabularnewline
0.4444 (2.25) & 0.559162 \tabularnewline
0.4722 (2.1176) & 0.602184 \tabularnewline
0.5 (2) & 0.001531 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=159652&T=1

[TABLE]
[ROW][C]Raw Periodogram[/C][/ROW]
[ROW][C]Parameter[/C][C]Value[/C][/ROW]
[ROW][C]Box-Cox transformation parameter (lambda)[/C][C]1[/C][/ROW]
[ROW][C]Degree of non-seasonal differencing (d)[/C][C]2[/C][/ROW]
[ROW][C]Degree of seasonal differencing (D)[/C][C]2[/C][/ROW]
[ROW][C]Seasonal Period (s)[/C][C]12[/C][/ROW]
[ROW][C]Frequency (Period)[/C][C]Spectrum[/C][/ROW]
[ROW][C]0.0278 (36)[/C][C]0.00742[/C][/ROW]
[ROW][C]0.0556 (18)[/C][C]0.067133[/C][/ROW]
[ROW][C]0.0833 (12)[/C][C]0.015663[/C][/ROW]
[ROW][C]0.1111 (9)[/C][C]0.984707[/C][/ROW]
[ROW][C]0.1389 (7.2)[/C][C]1.233572[/C][/ROW]
[ROW][C]0.1667 (6)[/C][C]0.642274[/C][/ROW]
[ROW][C]0.1944 (5.1429)[/C][C]0.278983[/C][/ROW]
[ROW][C]0.2222 (4.5)[/C][C]0.081054[/C][/ROW]
[ROW][C]0.25 (4)[/C][C]0.034141[/C][/ROW]
[ROW][C]0.2778 (3.6)[/C][C]0.301665[/C][/ROW]
[ROW][C]0.3056 (3.2727)[/C][C]0.078525[/C][/ROW]
[ROW][C]0.3333 (3)[/C][C]0.05575[/C][/ROW]
[ROW][C]0.3611 (2.7692)[/C][C]0.145863[/C][/ROW]
[ROW][C]0.3889 (2.5714)[/C][C]0.313202[/C][/ROW]
[ROW][C]0.4167 (2.4)[/C][C]0.016433[/C][/ROW]
[ROW][C]0.4444 (2.25)[/C][C]0.559162[/C][/ROW]
[ROW][C]0.4722 (2.1176)[/C][C]0.602184[/C][/ROW]
[ROW][C]0.5 (2)[/C][C]0.001531[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=159652&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=159652&T=1

As an alternative you can also use a QR Code:

The GUIDs for individual cells are displayed in the table below:

Raw Periodogram
Parameter	Value
Box-Cox transformation parameter (lambda)	1
Degree of non-seasonal differencing (d)	2
Degree of seasonal differencing (D)	2
Seasonal Period (s)	12
Frequency (Period)	Spectrum
0.0278 (36)	0.00742
0.0556 (18)	0.067133
0.0833 (12)	0.015663
0.1111 (9)	0.984707
0.1389 (7.2)	1.233572
0.1667 (6)	0.642274
0.1944 (5.1429)	0.278983
0.2222 (4.5)	0.081054
0.25 (4)	0.034141
0.2778 (3.6)	0.301665
0.3056 (3.2727)	0.078525
0.3333 (3)	0.05575
0.3611 (2.7692)	0.145863
0.3889 (2.5714)	0.313202
0.4167 (2.4)	0.016433
0.4444 (2.25)	0.559162
0.4722 (2.1176)	0.602184
0.5 (2)	0.001531

Figure 1

PNG link

Postscript link

PDF link

Figure 2

PNG link

Postscript link

PDF link

Parameters (Session):

par1 = 1 ; par2 = Do not include Seasonal Dummies ; par3 = No Linear Trend ;

Parameters (R input):

par1 = 1 ; par2 = 2 ; par3 = 2 ; par4 = 12 ;

R code (references can be found in the software module):

par1 <- as.numeric(par1)
par2 <- as.numeric(par2)
par3 <- as.numeric(par3)
par4 <- as.numeric(par4)
if (par1 == 0) {
x <- log(x)
} else {
x <- (x ^ par1 - 1) / par1
}
if (par2 > 0) x <- diff(x,lag=1,difference=par2)
if (par3 > 0) x <- diff(x,lag=par4,difference=par3)
bitmap(file='test1.png')
r <- spectrum(x,main='Raw Periodogram')
dev.off()
bitmap(file='test2.png')
cpgram(x,main='Cumulative Periodogram')
dev.off()
load(file='createtable')
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'Raw Periodogram',2,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Parameter',header=TRUE)
a<-table.element(a,'Value',header=TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Box-Cox transformation parameter (lambda)',header=TRUE)
a<-table.element(a,par1)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Degree of non-seasonal differencing (d)',header=TRUE)
a<-table.element(a,par2)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Degree of seasonal differencing (D)',header=TRUE)
a<-table.element(a,par3)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Seasonal Period (s)',header=TRUE)
a<-table.element(a,par4)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Frequency (Period)',header=TRUE)
a<-table.element(a,'Spectrum',header=TRUE)
a<-table.row.end(a)
for (i in 1:length(r$freq)) {
a<-table.row.start(a)
mylab <- round(r$freq[i],4)
mylab <- paste(mylab,' (',sep='')
mylab <- paste(mylab,round(1/r$freq[i],4),sep='')
mylab <- paste(mylab,')',sep='')
a<-table.element(a,mylab,header=TRUE)
a<-table.element(a,round(r$spec[i],6))
a<-table.row.end(a)
}
a<-table.end(a)
table.save(a,file='mytable.tab')

Free Statistics

Description of Statistical Computation

Tree of Dependent Computations

Dataset

Tables (Output of Computation)

Figures (Output of Computation)

Input Parameters & R Code