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Description of Statistical Computation

Author's title

Author*The author of this computation has been verified*
R Software Modulerwasp_chi_squared_tests.wasp
Title produced by softwareChi-Squared Test, McNemar Test, and Fisher Exact Test
Date of computationMon, 15 Dec 2014 18:55:14 +0000
Cite this page as followsStatistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2014/Dec/15/t1418669844cv0gmoof1c26tfr.htm/, Retrieved Thu, 16 May 2024 09:20:23 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=268899, Retrieved Thu, 16 May 2024 09:20:23 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact74

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-     [Chi-Squared Test, McNemar Test, and Fisher Exact Test] [Task 1 WS6] [2014-11-05 15:12:02] [805021881bfa5340347077d26b077617]
-   PD  [Chi-Squared Test, McNemar Test, and Fisher Exact Test] [Paper 16] [2014-12-15 18:38:26] [805021881bfa5340347077d26b077617]
-    D      [Chi-Squared Test, McNemar Test, and Fisher Exact Test] [paper 17] [2014-12-15 18:55:14] [3e8c20c2e60277acd0ccfb10a62c3907] [Current]
- R PD        [Chi-Squared Test, McNemar Test, and Fisher Exact Test] [Paper18] [2014-12-15 18:59:34] [805021881bfa5340347077d26b077617]
- R PD        [Chi-Squared Test, McNemar Test, and Fisher Exact Test] [Paper18] [2014-12-15 18:59:34] [805021881bfa5340347077d26b077617]
- R PD        [Chi-Squared Test, McNemar Test, and Fisher Exact Test] [Paper18] [2014-12-15 18:59:34] [805021881bfa5340347077d26b077617]
-   PD          [Chi-Squared Test, McNemar Test, and Fisher Exact Test] [Paper 18] [2014-12-15 19:06:07] [805021881bfa5340347077d26b077617]
-    D            [Chi-Squared Test, McNemar Test, and Fisher Exact Test] [Paper 19] [2014-12-15 19:09:53] [805021881bfa5340347077d26b077617]
-    D              [Chi-Squared Test, McNemar Test, and Fisher Exact Test] [Paper 20] [2014-12-15 19:13:36] [805021881bfa5340347077d26b077617]
-    D                [Chi-Squared Test, McNemar Test, and Fisher Exact Test] [Paper 21] [2014-12-15 19:16:18] [805021881bfa5340347077d26b077617]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
'Geslaagd' "'OK'" "'OK'" "'OK'" "'OK'" "'NOK'" "'OK'"
'Geslaagd' "'OK'" "'NOK'" "'OK'" "'OK'" "'NOK'" "'OK'"
'Niet geslaagd' "'OK'" "'OK'" "'OK'" "'NOK'" "'NOK'" "'NOK'"
'Niet geslaagd' "'OK'" "'OK'" "'OK'" "'NOK'" "'OK'" "'OK'"
'Geslaagd' "'OK'" "'NOK'" "'NOK'" "'NOK'" "'OK'" "'OK'"
'Geslaagd' "'OK'" "'NOK'" "'OK'" "'OK'" "'OK'" "'NOK'"
'Geslaagd' "'OK'" "'NOK'" "'OK'" "'OK'" "'OK'" "'OK'"
'Geslaagd' "'OK'" "'OK'" "'OK'" "'NOK'" "'OK'" "'NOK'"
'Niet geslaagd' "'OK'" "'OK'" "'NOK'" "'OK'" "'OK'" "'OK'"
'Geslaagd' "'OK'" "'OK'" "'OK'" "'OK'" "'NOK'" "'OK'"
'Niet geslaagd' "'OK'" "'NOK'" "'OK'" "'NOK'" "'OK'" "'OK'"
'Geslaagd' "'OK'" "'NOK'" "'OK'" "'OK'" "'NOK'" "'OK'"
'Niet geslaagd' "'OK'" "'OK'" "'OK'" "'NOK'" "'NOK'" "'NOK'"
'Geslaagd' "'OK'" "'NOK'" "'NOK'" "'OK'" "'NOK'" "'OK'"
'Geslaagd' "'OK'" "'NOK'" "'OK'" "'NOK'" "'OK'" "'OK'"
'Niet geslaagd' "'OK'" "'OK'" "'OK'" "'NOK'" "'OK'" "'OK'"
'Geslaagd' "'OK'" "'NOK'" "'OK'" "'NOK'" "'NOK'" "'OK'"
'Geslaagd' "'OK'" "'OK'" "'OK'" "'NOK'" "'NOK'" "'OK'"
'Geslaagd' "'OK'" "'OK'" "'OK'" "'NOK'" "'NOK'" "'OK'"
'Geslaagd' "'OK'" "'OK'" "'OK'" "'OK'" "'OK'" "'NOK'"
'Geslaagd' "'NOK'" "'NOK'" "'OK'" "'NOK'" "'NOK'" "'NOK'"
'Geslaagd' "'OK'" "'OK'" "'OK'" "'NOK'" "'OK'" "'OK'"
'Geslaagd' "'OK'" "'NOK'" "'OK'" "'OK'" "'NOK'" "'OK'"
'Geslaagd' "'OK'" "'NOK'" "'OK'" "'OK'" "'NOK'" "'OK'"
'Niet geslaagd' "'OK'" "'NOK'" "'OK'" "'NOK'" "'NOK'" "'OK'"
'Geslaagd' "'OK'" "'NOK'" "'OK'" "'NOK'" "'OK'" "'OK'"
'Niet geslaagd' "'OK'" "'OK'" "'OK'" "'OK'" "'OK'" "'OK'"
'Geslaagd' "'OK'" "'OK'" "'OK'" "'OK'" "'NOK'" "'OK'"
'Geslaagd' "'NOK'" "'NOK'" "'OK'" "'NOK'" "'NOK'" "'NOK'"
'Geslaagd' "'OK'" "'NOK'" "'OK'" "'NOK'" "'OK'" "'NOK'"
'Geslaagd' "'OK'" "'OK'" "'OK'" "'OK'" "'OK'" "'OK'"
'Geslaagd' "'OK'" "'OK'" "'OK'" "'NOK'" "'OK'" "'OK'"
'Geslaagd' "'OK'" "'NOK'" "'OK'" "'OK'" "'NOK'" "'OK'"
'Geslaagd' "'OK'" "'NOK'" "'OK'" "'OK'" "'NOK'" "'OK'"
'Geslaagd' "'OK'" "'OK'" "'OK'" "'OK'" "'OK'" "'OK'"
'Geslaagd' "'OK'" "'NOK'" "'OK'" "'OK'" "'OK'" "'OK'"
'Geslaagd' "'OK'" "'NOK'" "'OK'" "'OK'" "'OK'" "'OK'"
'Geslaagd' "'OK'" "'OK'" "'OK'" "'NOK'" "'NOK'" "'OK'"
'Geslaagd' "'OK'" "'NOK'" "'OK'" "'NOK'" "'OK'" "'NOK'"
'Geslaagd' "'OK'" "'OK'" "'OK'" "'OK'" "'OK'" "'OK'"
'Geslaagd' "'OK'" "'NOK'" "'NOK'" "'NOK'" "'NOK'" "'OK'"
'Niet geslaagd' "'OK'" "'OK'" "'OK'" "'OK'" "'OK'" "'OK'"
'Geslaagd' "'OK'" "'OK'" "'OK'" "'NOK'" "'OK'" "'OK'"
'Niet geslaagd' "'OK'" "'NOK'" "'OK'" "'OK'" "'OK'" "'OK'"
'Niet geslaagd' "'OK'" "'NOK'" "'OK'" "'NOK'" "'OK'" "'OK'"
'Geslaagd' "'OK'" "'NOK'" "'OK'" "'OK'" "'OK'" "'NOK'"
'Geslaagd' "'OK'" "'OK'" "'OK'" "'NOK'" "'OK'" "'OK'"
'Geslaagd' "'OK'" "'NOK'" "'OK'" "'NOK'" "'NOK'" "'NOK'"
'Geslaagd' "'OK'" "'NOK'" "'NOK'" "'NOK'" "'OK'" "'NOK'"
'Geslaagd' "'OK'" "'OK'" "'OK'" "'OK'" "'OK'" "'OK'"
'Geslaagd' "'OK'" "'NOK'" "'OK'" "'NOK'" "'NOK'" "'OK'"
'Niet geslaagd' "'OK'" "'OK'" "'OK'" "'NOK'" "'OK'" "'OK'"
'Geslaagd' "'OK'" "'OK'" "'OK'" "'NOK'" "'OK'" "'OK'"
'Geslaagd' "'OK'" "'OK'" "'OK'" "'OK'" "'OK'" "'OK'"
'Niet geslaagd' "'OK'" "'NOK'" "'OK'" "'NOK'" "'NOK'" "'OK'"
'Geslaagd' "'NOK'" "'NOK'" "'NOK'" "'OK'" "'NOK'" "'NOK'"
'Geslaagd' "'OK'" "'NOK'" "'OK'" "'OK'" "'NOK'" "'OK'"
'Niet geslaagd' "'OK'" "'NOK'" "'OK'" "'NOK'" "'OK'" "'OK'"
'Niet geslaagd' "'OK'" "'OK'" "'OK'" "'NOK'" "'OK'" "'OK'"
'Niet geslaagd' "'OK'" "'OK'" "'OK'" "'NOK'" "'NOK'" "'OK'"
'Geslaagd' "'OK'" "'NOK'" "'OK'" "'NOK'" "'NOK'" "'OK'"
'Niet geslaagd' "'OK'" "'NOK'" "'OK'" "'OK'" "'NOK'" "'OK'"

Tables (Output of Computation)





Summary of computational transaction
Raw Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time3 seconds
R Server'Sir Ronald Aylmer Fisher' @ fisher.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 & 3 seconds \tabularnewline
R Server & 'Sir Ronald Aylmer Fisher' @ fisher.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=268899&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]3 seconds[/C][/ROW]
[ROW][C]R Server[/C][C]'Sir Ronald Aylmer Fisher' @ fisher.wessa.net[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=268899&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=268899&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 time3 seconds
R Server'Sir Ronald Aylmer Fisher' @ fisher.wessa.net






Tabulation of Results
TotSch x CalSch
'NOK''OK'
Geslaagd342
Niet ,geslaagd017

\begin{tabular}{lllllllll}
\hline
Tabulation of Results \tabularnewline
TotSch  x  CalSch \tabularnewline
  & 'NOK' & 'OK' \tabularnewline
Geslaagd & 3 & 42 \tabularnewline
Niet
,geslaagd & 0 & 17 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=268899&T=1

[TABLE]
[ROW][C]Tabulation of Results[/C][/ROW]
[ROW][C]TotSch  x  CalSch[/C][/ROW]
[ROW][C] [/C][C]'NOK'[/C][C]'OK'[/C][/ROW]
[C]Geslaagd[/C][C]3[/C][C]42[/C][/ROW]
[C]Niet
,geslaagd[/C][C]0[/C][C]17[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=268899&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=268899&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
TotSch x CalSch
'NOK''OK'
Geslaagd342
Niet ,geslaagd017






Tabulation of Expected Results
TotSch x CalSch
'NOK''OK'
Geslaagd2.1842.82
Niet ,geslaagd0.8216.18

\begin{tabular}{lllllllll}
\hline
Tabulation of Expected Results \tabularnewline
TotSch  x  CalSch \tabularnewline
  & 'NOK' & 'OK' \tabularnewline
Geslaagd & 2.18 & 42.82 \tabularnewline
Niet
,geslaagd & 0.82 & 16.18 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=268899&T=2

[TABLE]
[ROW][C]Tabulation of Expected Results[/C][/ROW]
[ROW][C]TotSch  x  CalSch[/C][/ROW]
[ROW][C] [/C][C]'NOK'[/C][C]'OK'[/C][/ROW]
[C]Geslaagd[/C][C]2.18[/C][C]42.82[/C][/ROW]
[C]Niet
,geslaagd[/C][C]0.82[/C][C]16.18[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=268899&T=2

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=268899&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
TotSch x CalSch
'NOK''OK'
Geslaagd2.1842.82
Niet ,geslaagd0.8216.18






Statistical Results
Pearson's Chi-squared test with simulated p-value (based on 2000 replicates)
Exact Pearson Chi Square Statistic1.19
P value0.58

\begin{tabular}{lllllllll}
\hline
Statistical Results \tabularnewline
Pearson's Chi-squared test with simulated p-value
	 (based on 2000 replicates) \tabularnewline
Exact Pearson Chi Square Statistic & 1.19 \tabularnewline
P value & 0.58 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=268899&T=3

[TABLE]
[ROW][C]Statistical Results[/C][/ROW]
[ROW][C]Pearson's Chi-squared test with simulated p-value
	 (based on 2000 replicates)[/C][/ROW]
[ROW][C]Exact Pearson Chi Square Statistic[/C][C]1.19[/C][/ROW]
[ROW][C]P value[/C][C]0.58[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=268899&T=3

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=268899&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 with simulated p-value (based on 2000 replicates)
Exact Pearson Chi Square Statistic1.19
P value0.58


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
par1 = 1 ; par2 = 2 ; par3 = Exact Pearson Chi-Squared by Simulation ;
Parameters (R input):
par1 = 1 ; par2 = 2 ; par3 = Exact Pearson Chi-Squared by Simulation ;
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=='Fisher Exact Test') {
(cst <- fisher.test(table1))
}
if ((par3 != 'McNemar Chi-Squared') & (par3 != 'Fisher Exact Test')) {
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)
if (par3=='Pearson Chi-Squared') a<-table.element(a, 'Pearson Chi Square Statistic', 1, TRUE)
if (par3=='Exact Pearson Chi-Squared by Simulation') a<-table.element(a, 'Exact Pearson Chi Square Statistic', 1, TRUE)
if (par3=='McNemar Chi-Squared') a<-table.element(a, 'McNemar Chi Square Statistic', 1, TRUE)
if (par3=='Fisher Exact Test') a<-table.element(a, 'Odds Ratio', 1, TRUE)
if (par3=='Fisher Exact Test') {
if ((ncol(table1) == 2) & (nrow(table1) == 2)) {
a<-table.element(a, round(cst$estimate, digits=2), 1,FALSE)
} else {
a<-table.element(a, '--', 1,FALSE)
}
} else {
a<-table.element(a, round(cst$statistic, digits=2), 1,FALSE)
}
a<-table.row.end(a)
if(!simulate.p.value){
if(par3!='Fisher Exact Test') {
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')