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Description of Statistical Computation

Author's title

Author*Unverified author*
R Software Modulerwasp_chi_squared_tests.wasp
Title produced by softwareChi-Squared Test, McNemar Test, and Fisher Exact Test
Date of computationThu, 17 Nov 2011 10:32:34 -0500
Cite this page as followsStatistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2011/Nov/17/t1321543968074lzepv6ps60yj.htm/, Retrieved Fri, 01 Nov 2024 00:04:26 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=144928, Retrieved Fri, 01 Nov 2024 00:04:26 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact162

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-     [Bivariate Data Series] [Bivariate dataset] [2008-01-05 23:51:08] [74be16979710d4c4e7c6647856088456]
- RMPD  [Chi-Squared and McNemar Tests] [ws6-vraag2] [2010-11-25 09:18:56] [ca50229b6b451ac8f5a30a9e3154d674]
- R         [Chi-Squared Test, McNemar Test, and Fisher Exact Test] [Depression vs con...] [2011-11-17 15:32:34] [d41d8cd98f00b204e9800998ecf8427e] [Current]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
'A'	'A'	'D'	'A'	'B'	'B'	'D'
'A'	'C'	'A'	'B'	'A'	'C'	'A'
'D'	'B'	'A'	'A'	'D'	'A'	'C'
'D'	'C'	'C'	'D'	'D'	'B'	'C'
'B'	'A'	'C'	'A'	'A'	'A'	'B'
'B'	'D'	'D'	'C'	'A'	'B'	'A'
'A'	'D'	'A'	'A'	'B'	'A'	'D'
'B'	'B'	'C'	'A'	'B'	'C'	'A'
'B'	'B'	'C'	'A'	'B'	'D'	'B'
'A'	'A'	'C'	'D'	'B'	'B'	'B'
'A'	'D'	'A'	'C'	'A'	'D'	'A'
'B'	'B'	'A'	'A'	'A'	'D'	'D'
'A'	'B'	'A'	'A'	'D'	'A'	'C'
'A'	'A'	'A'	'B'	'A'	'A'	'D'
'C'	'A'	'A'	'A'	'A'	'D'	'A'
'C'	'C'	'C'	'A'	'B'	'A'	'D'
'B'	'C'	'C'	'C'	'B'	'A'	'B'
'A'	'A'	'A'	'A'	'A'	'C'	'A'
'A'	'A'	'A'	'B'	'B'	'D'	'D'
'C'	'C'	'A'	'A'	'A'	'B'	'D'
'C'	'C'	'A'	'B'	'A'	'D'	'C'
'D'	'D'	'A'	'A'	'D'	'A'	'C'
'A'	'A'	'A'	'A'	'B'	'B'	'D'
'A'	'A'	'A'	'B'	'D'	'A'	'D'
'A'	'C'	'A'	'D'	'A'	'C'	'A'
'A'	'C'	'A'	'A'	'D'	'D'	'A'
'B'	'B'	'A'	'C'	'A'	'C'	'B'
'C'	'A'	'C'	'A'	'B'	'A'	'C'
'C'	'C'	'A'	'A'	'B'	'A'	'A'
'B'	'C'	'C'	'C'	'D'	'B'	'C'
'D'	'D'	'C'	'A'	'A'	'D'	'A'
'D'	'C'	'D'	'D'	'C'	'A'	'D'
'A'	'D'	'C'	'C'	'A'	'D'	'C'
'B'	'A'	'A'	'A'	'B'	'C'	'A'
'B'	'D'	'C'	'A'	'B'	'B'	'B'
'C'	'C'	'D'	'D'	'A'	'D'	'C'
'D'	'D'	'D'	'D'	'D'	'A'	'D'
'B'	'C'	'C'	'A'	'B'	'B'	'C'
'D'	'D'	'A'	'C'	'A'	'D'	'B'
'B'	'C'	'A'	'C'	'C'	'D'	'C'
'A'	'C'	'A'	'C'	'B'	'D'	'B'
'B'	'C'	'C'	'A'	'A'	'A'	'B'
'A'	'C'	'A'	'A'	'A'	'D'	'D'
'B'	'C'	'C'	'C'	'D'	'A'	'D'
'A'	'D'	'C'	'C'	'D'	'C'	'C'
'A'	'B'	'D'	'A'	'D'	'B'	'C'
'A'	'A'	'C'	'A'	'B'	'D'	'D'
'C'	'B'	'C'	'B'	'B'	'C'	'B'
'B'	'A'	'A'	'B'	'A'	'A'	'B'
'A'	'C'	'C'	'A'	'C'	'C'	'B'
'C'	'A'	'A'	'A'	'A'	'D'	'C'
'C'	'D'	'C'	'C'	'B'	'A'	'C'
'C'	'C'	'D'	'A'	'D'	'A'	'D'
'B'	'A'	'A'	'A'	'D'	'A'	'D'
'C'	'C'	'D'	'D'	'D'	'C'	'D'
'A'	'C'	'C'	'D'	'B'	'B'	'B'
'A'	'B'	'A'	'A'	'A'	'B'	'B'
'D'	'B'	'A'	'A'	'B'	'D'	'C'
'A'	'B'	'C'	'B'	'D'	'D'	'B'
'B'	'B'	'A'	'C'	'D'	'A'	'C'
'D'	'D'	'D'	'D'	'D'	'A'	'D'
'A'	'B'	'A'	'A'	'C'	'B'	'B'
'B'	'B'	'A'	'A'	'D'	'B'	'B'
'D'	'B'	'C'	'B'	'B'	'A'	'D'
'B'	'D'	'A'	'A'	'B'	'B'	'D'
'B'	'A'	'A'	'A'	'D'	'C'	'A'
'B'	'B'	'A'	'A'	'D'	'A'	'C'
'D'	'D'	'A'	'B'	'D'	'B'	'B'
'A'	'A'	'D'	'A'	'B'	'B'	'D'
'B'	'A'	'A'	'A'	'B'	'A'	'C'
'A'	'B'	'D'	'D'	'B'	'B'	'C'
'D'	'A'	'C'	'B'	'A'	'A'	'D'
'B'	'A'	'A'	'A'	'B'	'B'	'A'
'A'	'A'	'A'	'A'	'B'	'D'	'C'
'B'	'D'	'A'	'A'	'C'	'C'	'A'
'A'	'D'	'A'	'D'	'D'	'A'	'A'
'A'	'A'	'A'	'A'	'A'	'B'	'C'
'B'	'D'	'A'	'B'	'C'	'A'	'C'
'D'	'D'	'D'	'A'	'B'	'B'	'B'
'A'	'D'	'A'	'A'	'C'	'D'	'D'
'C'	'B'	'A'	'A'	'B'	'C'	'A'
'A'	'A'	'A'	'A'	'A'	'D'	'D'
'B'	'A'	'A'	'A'	'B'	'D'	'C'
'A'	'C'	'C'	'A'	'A'	'B'	'B'
'C'	'B'	'C'	'B'	'B'	'B'	'C'
'C'	'D'	'A'	'C'	'B'	'B'	'B'
'A'	'A'	'C'	'D'	'B'	'B'	'B'
'C'	'B'	'A'	'A'	'B'	'B'	'C'
'D'	'C'	'A'	'A'	'C'	'A'	'D'
'C'	'C'	'C'	'A'	'D'	'A'	'C'
'D'	'B'	'D'	'D'	'A'	'B'	'B'
'B'	'C'	'A'	'A'	'C'	'A'	'D'
'B'	'A'	'A'	'A'	'B'	'B'	'B'
'C'	'D'	'C'	'A'	'B'	'A'	'A'
'D'	'D'	'D'	'A'	'C'	'D'	'A'
'A'	'B'	'A'	'C'	'A'	'C'	'A'
'A'	'B'	'A'	'A'	'D'	'A'	'C'
'B'	'D'	'A'	'D'	'B'	'C'	'A'
'A'	'B'	'A'	'A'	'A'	'C'	'A'
'C'	'B'	'C'	'C'	'B'	'D'	'B'
'A'	'B'	'A'	'A'	'A'	'D'	'B'
'A'	'B'	'A'	'B'	'D'	'A'	'B'
'B'	'A'	'A'	'A'	'A'	'B'	'A'
'C'	'D'	'C'	'B'	'D'	'C'	'C'
'C'	'A'	'A'	'B'	'B'	'A'	'A'
'A'	'C'	'D'	'A'	'D'	'A'	'C'
'A'	'B'	'A'	'A'	'A'	'C'	'B'
'A'	'A'	'A'	'A'	'B'	'A'	'C'
'B'	'B'	'A'	'B'	'D'	'A'	'D'
'A'	'A'	'D'	'D'	'D'	'A'	'D'
'D'	'B'	'A'	'A'	'B'	'A'	'A'
'D'	'C'	'A'	'A'	'D'	'A'	'B'
'C'	'A'	'A'	'B'	'C'	'C'	'A'
'C'	'C'	'D'	'B'	'B'	'A'	'D'
'A'	'B'	'D'	'C'	'A'	'B'	'B'
'A'	'C'	'A'	'A'	'A'	'D'	'A'
'C'	'A'	'C'	'A'	'B'	'A'	'D'
'B'	'A'	'C'	'D'	'B'	'B'	'C'
'C'	'B'	'D'	'B'	'B'	'D'	'C'
'A'	'B'	'A'	'A'	'B'	'A'	'A'
'C'	'A'	'D'	'B'	'D'	'A'	'D'
'D'	'D'	'A'	'A'	'B'	'A'	'B'
'A'	'A'	'D'	'A'	'B'	'C'	'A'
'A'	'A'	'A'	'A'	'B'	'D'	'B'
'C'	'D'	'C'	'A'	'B'	'C'	'B'
'D'	'C'	'A'	'A'	'C'	'C'	'A'
'A'	'C'	'C'	'C'	'A'	'D'	'A'
'A'	'A'	'A'	'B'	'A'	'D'	'B'
'C'	'B'	'C'	'D'	'A'	'C'	'A'
'B'	'C'	'D'	'B'	'B'	'B'	'C'
'C'	'C'	'A'	'C'	'C'	'C'	'C'
'D'	'C'	'D'	'B'	'D'	'A'	'C'
'A'	'A'	'A'	'D'	'B'	'D'	'B'
'D'	'D'	'D'	'B'	'B'	'A'	'D'
'A'	'A'	'C'	'A'	'B'	'B'	'B'
'C'	'D'	'C'	'A'	'A'	'A'	'A'
'D'	'D'	'D'	'D'	'D'	'A'	'D'
'B'	'B'	'C'	'B'	'B'	'A'	'D'
'D'	'B'	'D'	'C'	'D'	'A'	'D'
'B'	'B'	'D'	'D'	'B'	'C'	'D'
'D'	'B'	'D'	'D'	'C'	'B'	'C'
'C'	'B'	'A'	'D'	'B'	'D'	'D'
'D'	'B'	'C'	'D'	'A'	'A'	'A'
'D'	'B'	'A'	'A'	'B'	'B'	'A'
'D'	'D'	'A'	'B'	'B'	'B'	'B'
'A'	'D'	'D'	'D'	'A'	'C'	'A'
'C'	'D'	'A'	'A'	'A'	'B'	'B'
'B'	'B'	'D'	'A'	'D'	'B'	'D'
'C'	'D'	'A'	'A'	'D'	'C'	'B'
'B'	'C'	'D'	'D'	'D'	'A'	'B'
'A'	'A'	'D'	'D'	'A'	'B'	'A'
'A'	'A'	'C'	'A'	'C'	'A'	'A'
'B'	'A'	'A'	'D'	'A'	'D'	'C'
'B'	'A'	'A'	'D'	'D'	'B'	'C'
'B'	'B'	'C'	'D'	'D'	'A'	'C'
'C'	'D'	'D'	'D'	'C'	'A'	'A'
'B'	'C'	'A'	'A'	'C'	'A'	'D'
'C'	'A'	'D'	'D'	'B'	'A'	'C'
'C'	'B'	'C'	'D'	'A'	'C'	'A'
'B'	'C'	'A'	'B'	'C'	'D'	'A'
'C'	'B'	'D'	'D'	'D'	'A'	'A'
'B'	'B'	'D'	'D'	'C'	'A'	'C'

Tables (Output of Computation)





Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time2 seconds
R Server'Herman Ole Andreas Wold' @ wold.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 & 2 seconds \tabularnewline
R Server & 'Herman Ole Andreas Wold' @ wold.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=144928&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]2 seconds[/C][/ROW]
[ROW][C]R Server[/C][C]'Herman Ole Andreas Wold' @ wold.wessa.net[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=144928&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=144928&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 time2 seconds
R Server'Herman Ole Andreas Wold' @ wold.wessa.net






Tabulation of Results
Connected x Depression
ABCD
A12151017
B171376
C155107
D16714

\begin{tabular}{lllllllll}
\hline
Tabulation of Results \tabularnewline
Connected  x  Depression \tabularnewline
  & A & B & C & D \tabularnewline
A & 12 & 15 & 10 & 17 \tabularnewline
B & 17 & 13 & 7 & 6 \tabularnewline
C & 15 & 5 & 10 & 7 \tabularnewline
D & 16 & 7 & 1 & 4 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=144928&T=1

[TABLE]
[ROW][C]Tabulation of Results[/C][/ROW]
[ROW][C]Connected  x  Depression[/C][/ROW]
[ROW][C] [/C][C]A[/C][C]B[/C][C]C[/C][C]D[/C][/ROW]
[C]A[/C][C]12[/C][C]15[/C][C]10[/C][C]17[/C][/ROW]
[C]B[/C][C]17[/C][C]13[/C][C]7[/C][C]6[/C][/ROW]
[C]C[/C][C]15[/C][C]5[/C][C]10[/C][C]7[/C][/ROW]
[C]D[/C][C]16[/C][C]7[/C][C]1[/C][C]4[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=144928&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=144928&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:

Tabulation of Results
Connected x Depression
ABCD
A12151017
B171376
C155107
D16714






Tabulation of Expected Results
Connected x Depression
ABCD
A2013.339.3311.33
B15.9310.627.439.02
C13.79.146.47.77
D10.376.914.845.88

\begin{tabular}{lllllllll}
\hline
Tabulation of Expected Results \tabularnewline
Connected  x  Depression \tabularnewline
  & A & B & C & D \tabularnewline
A & 20 & 13.33 & 9.33 & 11.33 \tabularnewline
B & 15.93 & 10.62 & 7.43 & 9.02 \tabularnewline
C & 13.7 & 9.14 & 6.4 & 7.77 \tabularnewline
D & 10.37 & 6.91 & 4.84 & 5.88 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=144928&T=2

[TABLE]
[ROW][C]Tabulation of Expected Results[/C][/ROW]
[ROW][C]Connected  x  Depression[/C][/ROW]
[ROW][C] [/C][C]A[/C][C]B[/C][C]C[/C][C]D[/C][/ROW]
[C]A[/C][C]20[/C][C]13.33[/C][C]9.33[/C][C]11.33[/C][/ROW]
[C]B[/C][C]15.93[/C][C]10.62[/C][C]7.43[/C][C]9.02[/C][/ROW]
[C]C[/C][C]13.7[/C][C]9.14[/C][C]6.4[/C][C]7.77[/C][/ROW]
[C]D[/C][C]10.37[/C][C]6.91[/C][C]4.84[/C][C]5.88[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=144928&T=2

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=144928&T=2

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


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

Tabulation of Expected Results
Connected x Depression
ABCD
A2013.339.3311.33
B15.9310.627.439.02
C13.79.146.47.77
D10.376.914.845.88






Statistical Results
Pearson's Chi-squared test
Chi Square Statistic18.74
Degrees of Freedom9
P value0.03

\begin{tabular}{lllllllll}
\hline
Statistical Results \tabularnewline
Pearson's Chi-squared test \tabularnewline
Chi Square Statistic & 18.74 \tabularnewline
Degrees of Freedom & 9 \tabularnewline
P value & 0.03 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=144928&T=3

[TABLE]
[ROW][C]Statistical Results[/C][/ROW]
[ROW][C]Pearson's Chi-squared test[/C][/ROW]
[ROW][C]Chi Square Statistic[/C][C]18.74[/C][/ROW]
[ROW][C]Degrees of Freedom[/C][C]9[/C][/ROW]
[ROW][C]P value[/C][C]0.03[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=144928&T=3

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=144928&T=3

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


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

Statistical Results
Pearson's Chi-squared test
Chi Square Statistic18.74
Degrees of Freedom9
P value0.03


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
par1 = 1 ; par2 = 6 ; par3 = Pearson Chi-Squared ;
Parameters (R input):
par1 = 1 ; par2 = 6 ; par3 = Pearson Chi-Squared ;
R code (references can be found in the software module):
library(vcd)
cat1 <- as.numeric(par1) #
cat2<- as.numeric(par2) #
simulate.p.value=FALSE
if (par3 == 'Exact Pearson Chi-Squared by Simulation') simulate.p.value=TRUE
x <- t(x)
(z <- array(unlist(x),dim=c(length(x[,1]),length(x[1,]))))
(table1 <- table(z[,cat1],z[,cat2]))
(V1<-dimnames(y)[[1]][cat1])
(V2<-dimnames(y)[[1]][cat2])
bitmap(file='pic1.png')
assoc(ftable(z[,cat1],z[,cat2],row.vars=1,dnn=c(V1,V2)),shade=T)
dev.off()
load(file='createtable')
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'Tabulation of Results',ncol(table1)+1,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,paste(V1,' x ', V2),ncol(table1)+1,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, ' ', 1,TRUE)
for(nc in 1:ncol(table1)){
a<-table.element(a, colnames(table1)[nc], 1, TRUE)
}
a<-table.row.end(a)
for(nr in 1:nrow(table1) ){
a<-table.element(a, rownames(table1)[nr], 1, TRUE)
for(nc in 1:ncol(table1) ){
a<-table.element(a, table1[nr, nc], 1, FALSE)
}
a<-table.row.end(a)
}
a<-table.end(a)
table.save(a,file='mytable.tab')
(cst<-chisq.test(table1, simulate.p.value=simulate.p.value) )
if (par3 == 'McNemar Chi-Squared') {
(cst <- mcnemar.test(table1))
}
if (par3 != 'McNemar Chi-Squared') {
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'Tabulation of Expected Results',ncol(table1)+1,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,paste(V1,' x ', V2),ncol(table1)+1,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, ' ', 1,TRUE)
for(nc in 1:ncol(table1)){
a<-table.element(a, colnames(table1)[nc], 1, TRUE)
}
a<-table.row.end(a)
for(nr in 1:nrow(table1) ){
a<-table.element(a, rownames(table1)[nr], 1, TRUE)
for(nc in 1:ncol(table1) ){
a<-table.element(a, round(cst$expected[nr, nc], digits=2), 1, FALSE)
}
a<-table.row.end(a)
}
a<-table.end(a)
table.save(a,file='mytable1.tab')
}
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'Statistical Results',2,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, cst$method, 2,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, 'Chi Square Statistic', 1, TRUE)
a<-table.element(a, round(cst$statistic, digits=2), 1,FALSE)
a<-table.row.end(a)
if(!simulate.p.value){
a<-table.row.start(a)
a<-table.element(a, 'Degrees of Freedom', 1, TRUE)
a<-table.element(a, cst$parameter, 1,FALSE)
a<-table.row.end(a)
}
a<-table.row.start(a)
a<-table.element(a, 'P value', 1, TRUE)
a<-table.element(a, round(cst$p.value, digits=2), 1,FALSE)
a<-table.row.end(a)
a<-table.end(a)
table.save(a,file='mytable2.tab')