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Description of Statistical Computation

Author's title

Author*Unverified author*
R Software Modulerwasp_correlation.wasp
Title produced by softwarePearson Correlation
Date of computationMon, 20 Oct 2008 14:33:48 -0600
Cite this page as followsStatistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2008/Oct/20/t122453484702rm9dkk3lonihl.htm/, Retrieved Sun, 19 May 2024 14:10:54 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=18098, Retrieved Sun, 19 May 2024 14:10:54 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact109

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
F       [Pearson Correlation] [] [2008-10-20 20:33:48] [81dc0ee785f23261ccd6abf7aef76c2a] [Current]
Feedback Forum
2008-10-27 14:39:06 [Bernard Femont] [reply] 
Een negatieve correlatie van -0.314774316790482 wordt bekomen
Deze waarde benadert 0 meer dan 1, wat duidt op een negatieve correlatie.
2008-10-27 19:18:00 [Jens Peeters] [reply] 
De correlatie neigt inderdaad meer naar 0 dan naar 1.

Post a new message

Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
15370,6
14956,9
15469,7
15101,8
11703,7
16283,6
16726,5
14968,9
14861
14583,3
15305,8
17903,9
16379,4
15420,3
17870,5
15912,8
13866,5
17823,2
17872
17422
16704,5
15991,2
16583,6
19123,5
17838,7
17209,4
18586,5
16258,1
15141,6
19202,1
17746,5
19090,1
18040,3
17515,5
17751,8
21072,4
17170
19439,5
19795,4
17574,9
16165,4
19464,6
19932,1
19961,2
17343,4
18924,2
18574,1
21350,6
18594,6
19823,1
20844,4
19640,2
17735,4
19813,6
22238,5
20682,2
17818,6
21872,1
22117
20769,2249
Dataseries Y:
Download CSV
Histogram 
635,4
590,8
634,3
576,1
351,6
507,5
586,2
666,4
693,6
650,6
654,8
733,5
648,1
678,1
816,2
591
563,5
742,5
694,4
728,6
749
538,9
568,5
692,8
580,5
506,9
612,8
442,9
523,3
596,7
533,7
523,1
559,2
430,7
538,2
612,4
428
522,4
531,1
425,9
410,3
551
555,6
460,2
288,9
392,3
400,5
399
354,9
337,6
379,2
334,1
321,6
449,8
486,3
421,9
405,6
420
432,4
418,1

Tables (Output of Computation)





Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time1 seconds
R Server'Gwilym Jenkins' @ 72.249.127.135

\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 & 'Gwilym Jenkins' @ 72.249.127.135 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=18098&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]'Gwilym Jenkins' @ 72.249.127.135[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=18098&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=18098&T=0

As an alternative you can also use a QR Code:  
QR Code


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

Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time1 seconds
R Server'Gwilym Jenkins' @ 72.249.127.135






Pearson Product Moment Correlation - Ungrouped Data
StatisticVariable XVariable Y
Mean17788.375415531.325
Biased Variance4832322.2986365815408.815875
Biased Standard Deviation2198.25437532524124.132251550514
Covariance-87349.6376576695
Correlation-0.314774316790482
Determination0.0990828705109144
T-Test-2.52563661217671
p-value (2 sided)0.0143030781428273
p-value (1 sided)0.00715153907141365
Degrees of Freedom58
Number of Observations60

\begin{tabular}{lllllllll}
\hline
Pearson Product Moment Correlation - Ungrouped Data \tabularnewline
Statistic & Variable X & Variable Y \tabularnewline
Mean & 17788.375415 & 531.325 \tabularnewline
Biased Variance & 4832322.29863658 & 15408.815875 \tabularnewline
Biased Standard Deviation & 2198.25437532524 & 124.132251550514 \tabularnewline
Covariance & -87349.6376576695 \tabularnewline
Correlation & -0.314774316790482 \tabularnewline
Determination & 0.0990828705109144 \tabularnewline
T-Test & -2.52563661217671 \tabularnewline
p-value (2 sided) & 0.0143030781428273 \tabularnewline
p-value (1 sided) & 0.00715153907141365 \tabularnewline
Degrees of Freedom & 58 \tabularnewline
Number of Observations & 60 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=18098&T=1

[TABLE]
[ROW][C]Pearson Product Moment Correlation - Ungrouped Data[/C][/ROW]
[ROW][C]Statistic[/C][C]Variable X[/C][C]Variable Y[/C][/ROW]
[ROW][C]Mean[/C][C]17788.375415[/C][C]531.325[/C][/ROW]
[ROW][C]Biased Variance[/C][C]4832322.29863658[/C][C]15408.815875[/C][/ROW]
[ROW][C]Biased Standard Deviation[/C][C]2198.25437532524[/C][C]124.132251550514[/C][/ROW]
[ROW][C]Covariance[/C][C]-87349.6376576695[/C][/ROW]
[ROW][C]Correlation[/C][C]-0.314774316790482[/C][/ROW]
[ROW][C]Determination[/C][C]0.0990828705109144[/C][/ROW]
[ROW][C]T-Test[/C][C]-2.52563661217671[/C][/ROW]
[ROW][C]p-value (2 sided)[/C][C]0.0143030781428273[/C][/ROW]
[ROW][C]p-value (1 sided)[/C][C]0.00715153907141365[/C][/ROW]
[ROW][C]Degrees of Freedom[/C][C]58[/C][/ROW]
[ROW][C]Number of Observations[/C][C]60[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=18098&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=18098&T=1

As an alternative you can also use a QR Code:  
QR Code


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

Pearson Product Moment Correlation - Ungrouped Data
StatisticVariable XVariable Y
Mean17788.375415531.325
Biased Variance4832322.2986365815408.815875
Biased Standard Deviation2198.25437532524124.132251550514
Covariance-87349.6376576695
Correlation-0.314774316790482
Determination0.0990828705109144
T-Test-2.52563661217671
p-value (2 sided)0.0143030781428273
p-value (1 sided)0.00715153907141365
Degrees of Freedom58
Number of Observations60


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
Parameters (R input):
R code (references can be found in the software module):
bitmap(file='test1.png')
histx <- hist(x, plot=FALSE)
histy <- hist(y, plot=FALSE)
maxcounts <- max(c(histx$counts, histx$counts))
xrange <- c(min(x),max(x))
yrange <- c(min(y),max(y))
nf <- layout(matrix(c(2,0,1,3),2,2,byrow=TRUE), c(3,1), c(1,3), TRUE)
par(mar=c(4,4,1,1))
plot(x, y, xlim=xrange, ylim=yrange, xlab=xlab, ylab=ylab)
par(mar=c(0,4,1,1))
barplot(histx$counts, axes=FALSE, ylim=c(0, maxcounts), space=0)
par(mar=c(4,0,1,1))
barplot(histy$counts, axes=FALSE, xlim=c(0, maxcounts), space=0, horiz=TRUE)
dev.off()
lx = length(x)
makebiased = (lx-1)/lx
varx = var(x)*makebiased
vary = var(y)*makebiased
corxy <- cor.test(x,y,method='pearson')
cxy <- as.matrix(corxy$estimate)[1,1]
load(file='createtable')
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'Pearson Product Moment Correlation - Ungrouped Data',3,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Statistic',1,TRUE)
a<-table.element(a,'Variable X',1,TRUE)
a<-table.element(a,'Variable Y',1,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,hyperlink('arithmetic_mean.htm','Mean',''),header=TRUE)
a<-table.element(a,mean(x))
a<-table.element(a,mean(y))
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,hyperlink('biased.htm','Biased Variance',''),header=TRUE)
a<-table.element(a,varx)
a<-table.element(a,vary)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,hyperlink('biased1.htm','Biased Standard Deviation',''),header=TRUE)
a<-table.element(a,sqrt(varx))
a<-table.element(a,sqrt(vary))
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,hyperlink('covariance.htm','Covariance',''),header=TRUE)
a<-table.element(a,cov(x,y),2)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,hyperlink('pearson_correlation.htm','Correlation',''),header=TRUE)
a<-table.element(a,cxy,2)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,hyperlink('coeff_of_determination.htm','Determination',''),header=TRUE)
a<-table.element(a,cxy*cxy,2)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,hyperlink('ttest_statistic.htm','T-Test',''),header=TRUE)
a<-table.element(a,as.matrix(corxy$statistic)[1,1],2)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'p-value (2 sided)',header=TRUE)
a<-table.element(a,(p2 <- as.matrix(corxy$p.value)[1,1]),2)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'p-value (1 sided)',header=TRUE)
a<-table.element(a,p2/2,2)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Degrees of Freedom',header=TRUE)
a<-table.element(a,lx-2,2)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Number of Observations',header=TRUE)
a<-table.element(a,lx,2)
a<-table.row.end(a)
a<-table.end(a)
table.save(a,file='mytable.tab')