Free Statistics

of Irreproducible Research!

Author's title

Author*The author of this computation has been verified*
R Software Modulerwasp_One Factor ANOVA.wasp
Title produced by softwareOne-Way-Between-Groups ANOVA- Free Statistics Software (Calculator)
Date of computationMon, 01 Nov 2010 16:43:03 +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/2010/Nov/01/t1288629699ki46vex103qth9j.htm/, Retrieved Mon, 29 Apr 2024 09:17:48 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=90988, Retrieved Mon, 29 Apr 2024 09:17:48 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact190
Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-     [Paired and Unpaired Two Samples Tests about the Mean] [Dagelijkse omzet ...] [2010-10-25 11:22:12] [b98453cac15ba1066b407e146608df68]
F RMPD  [One-Way-Between-Groups ANOVA- Free Statistics Software (Calculator)] [Workshop 5 Q7 long] [2010-10-30 16:54:40] [c7506ced21a6c0dca45d37c8a93c80e0]
F   PD      [One-Way-Between-Groups ANOVA- Free Statistics Software (Calculator)] [Workshop 5 Q7(2)] [2010-11-01 16:43:03] [4c92126b39409bf78ea2674c8170c829] [Current]
Feedback Forum
2010-11-09 18:10:13 [411b43619fc9db329bbcdbf7261c55fb] [reply
De auteur heeft bij zijn berekening gebruikt gemaakt van de post2 resultaten (en niet het verschil van de post2-pre), dus hij vergelijkt niet het verschil op lange termijn bij zijn berekening. (bekijk http://www.freestatistics.org/blog/index.php?v=date/2010/Nov/07/t1289120619hk3s4duivnnye01.htm/ voor de berekening met de juiste data). Hij geeft ook de verkeerde conclusie. Hier merken we dat er geen leereffect is op lange termijn (Bij de 3 vergelijkingen in de Tukey Honest test is er telkens een hoge p waarde). Hier is het goed mogelijk dat er nog andere effecten meespelen. Zo zullen de actieve (gemotiveerde) studenten zelf op zoek gaan naar de uitleg van de Bayes Theorie (maar het duurt langer). Luie studenten zullen in geen tijd de treatment vergeten.

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Dataseries X:
'WWE'	0
'WWE'	0
'WWE'	1
'WWE'	0
'WWE'	1
'WWE'	1
'WWE'	0
'WWE'	1
'WWE'	0
'WWE'	0
'WWE'	0
'WWE'	0
'WWE'	0
'WWE'	NA
'WWE'	1
'WWE'	NA
'WWE'	0
'WWE'	0
'WWE'	1
'WWE'	0
'WWE'	0
'WWE'	0
'WWE'	0
'WWE'	0
'WWE'	1
'WWE'	1
'WWE'	0
'WWE'	0
'WWE'	0
'WWE'	0
'WWE'	1
'WWE'	0
'WWE'	0
'WWE'	0
'WWE'	0
'WWE'	0
'WWE'	0
'WWE'	0
'WWE'	NA
'WWE'	1
'WWE'	0
'CSWE'	0
'CSWE'	NA
'CSWE'	0
'CSWE'	NA
'CSWE'	0
'CSWE'	0
'CSWE'	0
'CSWE'	1
'CSWE'	0
'CSWE'	0
'CSWE'	1
'CSWE'	0
'CSWE'	0
'CSWE'	NA
'CSWE'	0
'CSWE'	NA
'CSWE'	0
'CSWE'	0
'CSWE'	NA
'CSWE'	0
'CSWE'	0
'CSWE'	NA
'CSWE'	0
'CSWE'	0
'CSWE'	0
'CSWE'	1
'CSWE'	0
'CSWE'	0
'CSWE'	0
'CSWE'	1
'CSWE'	1
'CSWE'	0
'CSWE'	NA
'CSWE'	0
'CSWE'	NA
'CSWE'	0
'CSWE'	0
'CSWE'	0
'CSWE'	0
'CSWE'	0
'C'	0
'C'	1
'C'	0
'C'	1
'C'	NA
'C'	0
'C'	0
'C'	0
'C'	0
'C'	NA
'C'	0
'C'	0
'C'	0
'C'	0
'C'	0
'C'	0
'C'	0
'C'	NA
'C'	0
'C'	0
'C'	0
'C'	0
'C'	0
'C'	0
'C'	0
'C'	0
'C'	0
'C'	0
'C'	0
'C'	0
'C'	0
'C'	1
'C'	0
'C'	0
'C'	0
'C'	1
'C'	0
'C'	NA
'C'	0




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=90988&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=90988&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=90988&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 Inputview raw input (R code)
Raw Outputview raw output of R engine
Computing time1 seconds
R Server'Gwilym Jenkins' @ 72.249.127.135







ANOVA Model
post2 ~ Treatment
means0.1140.0420.149

\begin{tabular}{lllllllll}
\hline
ANOVA Model \tabularnewline
post2  ~  Treatment \tabularnewline
means & 0.114 & 0.042 & 0.149 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=90988&T=1

[TABLE]
[ROW][C]ANOVA Model[/C][/ROW]
[ROW][C]post2  ~  Treatment[/C][/ROW]
[ROW][C]means[/C][C]0.114[/C][C]0.042[/C][C]0.149[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=90988&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=90988&T=1

As an alternative you can also use a QR Code:  

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

ANOVA Model
post2 ~ Treatment
means0.1140.0420.149







ANOVA Statistics
DfSum SqMean SqF valuePr(>F)
Treatment20.4320.2161.4560.238
Residuals10215.130.148

\begin{tabular}{lllllllll}
\hline
ANOVA Statistics \tabularnewline
  & Df & Sum Sq & Mean Sq & F value & Pr(>F) \tabularnewline
Treatment & 2 & 0.432 & 0.216 & 1.456 & 0.238 \tabularnewline
Residuals & 102 & 15.13 & 0.148 &   &   \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=90988&T=2

[TABLE]
[ROW][C]ANOVA Statistics[/C][/ROW]
[ROW][C] [/C][C]Df[/C][C]Sum Sq[/C][C]Mean Sq[/C][C]F value[/C][C]Pr(>F)[/C][/ROW]
[ROW][C]Treatment[/C][C]2[/C][C]0.432[/C][C]0.216[/C][C]1.456[/C][C]0.238[/C][/ROW]
[ROW][C]Residuals[/C][C]102[/C][C]15.13[/C][C]0.148[/C][C] [/C][C] [/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=90988&T=2

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=90988&T=2

As an alternative you can also use a QR Code:  

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

ANOVA Statistics
DfSum SqMean SqF valuePr(>F)
Treatment20.4320.2161.4560.238
Residuals10215.130.148







Tukey Honest Significant Difference Comparisons
difflwruprp adj
CSWE-C0.042-0.1820.2660.897
WWE-C0.149-0.0660.3630.23
WWE-CSWE0.107-0.1130.3270.482

\begin{tabular}{lllllllll}
\hline
Tukey Honest Significant Difference Comparisons \tabularnewline
  & diff & lwr & upr & p adj \tabularnewline
CSWE-C & 0.042 & -0.182 & 0.266 & 0.897 \tabularnewline
WWE-C & 0.149 & -0.066 & 0.363 & 0.23 \tabularnewline
WWE-CSWE & 0.107 & -0.113 & 0.327 & 0.482 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=90988&T=3

[TABLE]
[ROW][C]Tukey Honest Significant Difference Comparisons[/C][/ROW]
[ROW][C] [/C][C]diff[/C][C]lwr[/C][C]upr[/C][C]p adj[/C][/ROW]
[ROW][C]CSWE-C[/C][C]0.042[/C][C]-0.182[/C][C]0.266[/C][C]0.897[/C][/ROW]
[ROW][C]WWE-C[/C][C]0.149[/C][C]-0.066[/C][C]0.363[/C][C]0.23[/C][/ROW]
[ROW][C]WWE-CSWE[/C][C]0.107[/C][C]-0.113[/C][C]0.327[/C][C]0.482[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=90988&T=3

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=90988&T=3

As an alternative you can also use a QR Code:  

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

Tukey Honest Significant Difference Comparisons
difflwruprp adj
CSWE-C0.042-0.1820.2660.897
WWE-C0.149-0.0660.3630.23
WWE-CSWE0.107-0.1130.3270.482







Levenes Test for Homogeneity of Variance
DfF valuePr(>F)
Group21.4560.238
102

\begin{tabular}{lllllllll}
\hline
Levenes Test for Homogeneity of Variance \tabularnewline
  & Df & F value & Pr(>F) \tabularnewline
Group & 2 & 1.456 & 0.238 \tabularnewline
  & 102 &   &   \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=90988&T=4

[TABLE]
[ROW][C]Levenes Test for Homogeneity of Variance[/C][/ROW]
[ROW][C] [/C][C]Df[/C][C]F value[/C][C]Pr(>F)[/C][/ROW]
[ROW][C]Group[/C][C]2[/C][C]1.456[/C][C]0.238[/C][/ROW]
[ROW][C] [/C][C]102[/C][C] [/C][C] [/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=90988&T=4

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=90988&T=4

As an alternative you can also use a QR Code:  

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

Levenes Test for Homogeneity of Variance
DfF valuePr(>F)
Group21.4560.238
102



Parameters (Session):
par1 = 1 ; par2 = 2 ; par3 = 0.95 ; par4 = two.sided ; par5 = paired ; par6 = 0.0 ;
Parameters (R input):
par1 = 2 ; par2 = 1 ; par3 = TRUE ;
R code (references can be found in the software module):
cat1 <- as.numeric(par1) #
cat2<- as.numeric(par2) #
intercept<-as.logical(par3)
x <- t(x)
x1<-as.numeric(x[,cat1])
f1<-as.character(x[,cat2])
xdf<-data.frame(x1,f1)
(V1<-dimnames(y)[[1]][cat1])
(V2<-dimnames(y)[[1]][cat2])
names(xdf)<-c('Response', 'Treatment')
if(intercept == FALSE) (lmxdf<-lm(Response ~ Treatment - 1, data = xdf) ) else (lmxdf<-lm(Response ~ Treatment, data = xdf) )
(aov.xdf<-aov(lmxdf) )
(anova.xdf<-anova(lmxdf) )
load(file='createtable')
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'ANOVA Model', length(lmxdf$coefficients)+1,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, paste(V1, ' ~ ', V2), length(lmxdf$coefficients)+1,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, 'means',,TRUE)
for(i in 1:length(lmxdf$coefficients)){
a<-table.element(a, round(lmxdf$coefficients[i], digits=3),,FALSE)
}
a<-table.row.end(a)
a<-table.end(a)
table.save(a,file='mytable.tab')
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'ANOVA Statistics', 5+1,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, ' ',,TRUE)
a<-table.element(a, 'Df',,FALSE)
a<-table.element(a, 'Sum Sq',,FALSE)
a<-table.element(a, 'Mean Sq',,FALSE)
a<-table.element(a, 'F value',,FALSE)
a<-table.element(a, 'Pr(>F)',,FALSE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, V2,,TRUE)
a<-table.element(a, anova.xdf$Df[1],,FALSE)
a<-table.element(a, round(anova.xdf$'Sum Sq'[1], digits=3),,FALSE)
a<-table.element(a, round(anova.xdf$'Mean Sq'[1], digits=3),,FALSE)
a<-table.element(a, round(anova.xdf$'F value'[1], digits=3),,FALSE)
a<-table.element(a, round(anova.xdf$'Pr(>F)'[1], digits=3),,FALSE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, 'Residuals',,TRUE)
a<-table.element(a, anova.xdf$Df[2],,FALSE)
a<-table.element(a, round(anova.xdf$'Sum Sq'[2], digits=3),,FALSE)
a<-table.element(a, round(anova.xdf$'Mean Sq'[2], digits=3),,FALSE)
a<-table.element(a, ' ',,FALSE)
a<-table.element(a, ' ',,FALSE)
a<-table.row.end(a)
a<-table.end(a)
table.save(a,file='mytable1.tab')
bitmap(file='anovaplot.png')
boxplot(Response ~ Treatment, data=xdf, xlab=V2, ylab=V1)
dev.off()
if(intercept==TRUE){
thsd<-TukeyHSD(aov.xdf)
bitmap(file='TukeyHSDPlot.png')
plot(thsd)
dev.off()
}
if(intercept==TRUE){
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'Tukey Honest Significant Difference Comparisons', 5,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a, ' ', 1, TRUE)
for(i in 1:4){
a<-table.element(a,colnames(thsd[[1]])[i], 1, TRUE)
}
a<-table.row.end(a)
for(i in 1:length(rownames(thsd[[1]]))){
a<-table.row.start(a)
a<-table.element(a,rownames(thsd[[1]])[i], 1, TRUE)
for(j in 1:4){
a<-table.element(a,round(thsd[[1]][i,j], digits=3), 1, FALSE)
}
a<-table.row.end(a)
}
a<-table.end(a)
table.save(a,file='mytable2.tab')
}
if(intercept==FALSE){
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'TukeyHSD Message', 1,TRUE)
a<-table.row.end(a)
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'Must Include Intercept to use Tukey Test ', 1, FALSE)
a<-table.row.end(a)
a<-table.end(a)
table.save(a,file='mytable2.tab')
}
library(car)
lt.lmxdf<-levene.test(lmxdf)
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'Levenes Test for Homogeneity of Variance', 4,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,' ', 1, TRUE)
for (i in 1:3){
a<-table.element(a,names(lt.lmxdf)[i], 1, FALSE)
}
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Group', 1, TRUE)
for (i in 1:3){
a<-table.element(a,round(lt.lmxdf[[i]][1], digits=3), 1, FALSE)
}
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,' ', 1, TRUE)
a<-table.element(a,lt.lmxdf[[1]][2], 1, FALSE)
a<-table.element(a,' ', 1, FALSE)
a<-table.element(a,' ', 1, FALSE)
a<-table.row.end(a)
a<-table.end(a)
table.save(a,file='mytable3.tab')