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Description of Statistical Computation

Author's title

Author*The author of this computation has been verified*
R Software Modulerwasp_correlation.wasp
Title produced by softwarePearson Correlation
Date of computationSat, 18 Oct 2008 07:35:31 -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/18/t12243369859ovmjhtxu323fha.htm/, Retrieved Sun, 19 May 2024 16:32:47 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=16621, Retrieved Sun, 19 May 2024 16:32:47 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact123

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
F     [Univariate Data Series] [Eerste tijdreeks] [2008-10-11 15:49:53] [c45c87b96bbf32ffc2144fc37d767b2e]
-   PD  [Univariate Data Series] [aantal begonnen w...] [2008-10-18 13:04:32] [c45c87b96bbf32ffc2144fc37d767b2e]
F RMPD    [Pearson Correlation] [relatie tijdreeks...] [2008-10-18 13:27:30] [c45c87b96bbf32ffc2144fc37d767b2e]
F    D      [Pearson Correlation] [relatie tijdreeks...] [2008-10-18 13:31:33] [c45c87b96bbf32ffc2144fc37d767b2e]
F    D          [Pearson Correlation] [relatie tijdreeks...] [2008-10-18 13:35:31] [3dc594a6c62226e1e98766c4d385bfaa] [Current]
F    D            [Pearson Correlation] [relatie tijdreeks...] [2008-10-18 13:37:37] [c45c87b96bbf32ffc2144fc37d767b2e]
F    D              [Pearson Correlation] [relatie tijdreeks...] [2008-10-18 13:39:20] [c45c87b96bbf32ffc2144fc37d767b2e]
F    D                [Pearson Correlation] [relatie tijdreeks...] [2008-10-18 13:41:34] [c45c87b96bbf32ffc2144fc37d767b2e]
Feedback Forum
2008-10-27 16:39:04 [Michael Van Spaandonck] [reply] 
Een negatieve corelatie van 23% duidt op een relatief zwak omgekeerd verband tussen de datareeksen. Ik denk niet dat er een verklaring is voor deze uitkomst, en dat het hier louter om toeval draait. Ik kan me niet inbeelden dat deze reeksen daadwerkelijk een verband met elkaar zouden hebben.

Post a new message

Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
1.83
1.91
1.68
1.82
1.75
1.83
1.73
1.81
2.10
1.90
1.91
2.02
1.99
1.96
1.81
1.75
1.82
2.00
1.91
1.84
1.83
1.94
1.83
1.79
1.98
1.95
1.81
1.79
1.84
1.89
1.78
1.84
2.00
1.87
1.98
2.02
2.10
1.99
1.77
1.83
1.94
1.80
1.92
1.85
2.10
2.03
2.07
2.10
2.14
2.17
1.93
1.87
2.07
1.86
1.82
1.95
2.02
2.01
2.06
2.07
1.86
1.96
1.81
1.84
Dataseries Y:
Download CSV
Histogram 
106.40
111.48
112.21
106.13
110.83
104.26
107.79
110.39
104.91
105.78
97.77
106.96
100.87
106.28
103.47
103.75
109.94
108.15
109.35
106.25
105.78
108.01
107.08
102.30
102.33
109.50
102.58
107.51
114.81
107.75
101.98
106.17
101.77
99.24
101.70
104.37
98.05
104.49
101.74
110.01
108.16
104.75
110.60
104.09
113.11
105.52
106.28
105.09
102.25
103.48
109.53
93.56
95.69
103.85
106.37
107.91
104.18
102.12
99.75
100.76
104.38
104.89
102.29
100.91

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=16621&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=16621&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=16621&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
Mean1.91328125105.1509375
Biased Variance0.012743920898437516.6261647460937
Biased Standard Deviation0.1128889759827664.07751943540356
Covariance-0.109355505952381
Correlation-0.233858767443554
Determination0.0546899231102183
T-Test-1.89392317105897
p-value (2 sided)0.0629027803914839
p-value (1 sided)0.0314513901957419
Degrees of Freedom62
Number of Observations64

\begin{tabular}{lllllllll}
\hline
Pearson Product Moment Correlation - Ungrouped Data \tabularnewline
Statistic & Variable X & Variable Y \tabularnewline
Mean & 1.91328125 & 105.1509375 \tabularnewline
Biased Variance & 0.0127439208984375 & 16.6261647460937 \tabularnewline
Biased Standard Deviation & 0.112888975982766 & 4.07751943540356 \tabularnewline
Covariance & -0.109355505952381 \tabularnewline
Correlation & -0.233858767443554 \tabularnewline
Determination & 0.0546899231102183 \tabularnewline
T-Test & -1.89392317105897 \tabularnewline
p-value (2 sided) & 0.0629027803914839 \tabularnewline
p-value (1 sided) & 0.0314513901957419 \tabularnewline
Degrees of Freedom & 62 \tabularnewline
Number of Observations & 64 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=16621&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]1.91328125[/C][C]105.1509375[/C][/ROW]
[ROW][C]Biased Variance[/C][C]0.0127439208984375[/C][C]16.6261647460937[/C][/ROW]
[ROW][C]Biased Standard Deviation[/C][C]0.112888975982766[/C][C]4.07751943540356[/C][/ROW]
[ROW][C]Covariance[/C][C]-0.109355505952381[/C][/ROW]
[ROW][C]Correlation[/C][C]-0.233858767443554[/C][/ROW]
[ROW][C]Determination[/C][C]0.0546899231102183[/C][/ROW]
[ROW][C]T-Test[/C][C]-1.89392317105897[/C][/ROW]
[ROW][C]p-value (2 sided)[/C][C]0.0629027803914839[/C][/ROW]
[ROW][C]p-value (1 sided)[/C][C]0.0314513901957419[/C][/ROW]
[ROW][C]Degrees of Freedom[/C][C]62[/C][/ROW]
[ROW][C]Number of Observations[/C][C]64[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=16621&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=16621&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
Mean1.91328125105.1509375
Biased Variance0.012743920898437516.6261647460937
Biased Standard Deviation0.1128889759827664.07751943540356
Covariance-0.109355505952381
Correlation-0.233858767443554
Determination0.0546899231102183
T-Test-1.89392317105897
p-value (2 sided)0.0629027803914839
p-value (1 sided)0.0314513901957419
Degrees of Freedom62
Number of Observations64


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')