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Description of Statistical Computation

Author's title

Author*The author of this computation has been verified*
R Software Modulerwasp_cronbach.wasp
Title produced by softwareCronbach Alpha
Date of computationWed, 17 Dec 2014 14:45:31 +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/17/t1418827544sq01982ps0b1goj.htm/, Retrieved Sat, 07 Feb 2026 02:19:32 +0000
Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=270353, Retrieved Sat, 07 Feb 2026 02:19:32 +0000
QR Codes:

Original text written by user:
IsPrivate?No (this computation is public)
User-defined keywords
Estimated Impact228

Tree of Dependent Computations

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)
-       [Cronbach Alpha] [7) Demotivatie cr...] [2014-12-17 14:45:31] [3c8f34fed408bc4f957cadcbcbd22146] [Current]
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Dataset

Dataseries X:
Download CSV
Histogram
Boxplots 
1 2 2 1
1 1 1 1
2 2 2 2
1 2 1 1
1 1 1 1
5 5 2 5
1 1 1 1
1 1 1 1
1 4 2 1
1 1 1 1
1 3 2 1
1 1 1 1
1 1 1 1
1 2 1 1
1 4 1 1
1 1 1 1
1 1 1 1
1 3 2 1
2 2 5 2
2 2 2 1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
2 1 1 2
2 1 3 2
6 5 6 6
1 1 1 1
2 2 2 2
2 2 1 1
1 1 1 1
1 1 1 1
2 2 2 1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
2 4 2 2
1 3 1 1
1 2 1 1
1 1 2 1
1 1 1 1
1 1 1 1
2 1 1 1
1 2 1 1
1 2 1 1
1 1 2 1
1 1 1 1
2 2 1 1
1 1 1 1
1 1 1 1
1 1 1 1
2 3 2 2
5 4 5 4
2 2 1 1
2 1 1 1
1 1 1 1
3 5 1 2
1 1 1 1
3 2 3 2
2 2 1 1
2 2 2 2
2 2 2 2
2 2 1 1
2 3 1 2
1 1 1 1
1 1 1 1
3 2 2 2
3 2 2 2
2 1 1 1
1 1 1 1
1 1 1 1
2 4 5 4
2 5 2 1
2 5 1 1
2 2 2 1
2 5 1 1
2 2 1 1
1 1 1 1
1 2 2 2
1 1 1 1
1 4 1 1
1 1 1 1
4 4 4 3
1 1 1 1
3 2 2 2
1 1 1 1
1 1 1 1
7 7 7 7
1 1 1 1
1 1 1 1
1 1 1 1
1 2 1 1
1 1 1 1
1 1 1 1
3 3 3 3
1 2 1 1
1 1 1 1
1 3 1 1
2 2 1 1
1 2 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 4 1 4
2 2 2 1
1 1 1 1
1 1 1 1
1 1 4 1
1 1 1 1
1 1 1 1
3 3 3 3
1 2 1 1
2 3 1 2
2 2 1 1
5 4 4 4
1 1 1 1
2 1 1 1
1 1 1 1
2 1 1 1
1 1 1 2
2 1 1 2
1 1 1 1
1 1 1 1
1 1 1 1
2 2 1 1
2 2 2 2
2 5 1 2
1 1 1 1
2 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
4 6 4 2
1 1 1 1
2 2 1 2
1 1 1 1
1 1 1 1
4 4 2 4
1 2 1 1
1 2 1 1
1 2 1 1
1 2 1 1
2 3 1 1
6 6 4 3
4 4 4 4
1 1 1 1
1 1 1 1
1 1 1 4
2 3 2 2
1 2 1 1
5 3 3 3
1 1 1 1
4 4 4 4
1 1 4 4
1 2 1 1
1 3 1 1
1 1 1 1
1 1 1 1
1 1 1 1
2 1 1 1
1 1 1 1
1 1 1 1
2 1 1 1
1 1 1 1
1 1 1 1
2 1 1 1
2 2 2 2
4 7 3 1
4 1 1 1
1 2 1 1
1 2 3 2
1 5 1 1
1 2 1 1
1 1 1 1
1 1 1 1
3 3 2 3
1 2 1 1
6 7 4 5
1 1 1 1
1 1 1 1
1 1 1 1
1 2 1 1
1 1 1 1
3 5 4 4
2 1 1 1
1 1 1 1
2 2 1 1
2 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
2 2 1 2
1 1 1 1
2 3 2 1
1 3 2 1
1 1 1 1
3 1 1 1
1 2 1 1
2 4 1 1
2 2 2 2
1 1 1 1
3 2 1 1
1 1 1 1
4 5 1 3
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
3 2 1 1
1 1 1 2
1 1 1 1
1 2 1 1
4 5 2 1
2 2 2 2
1 1 1 1
1 1 1 1
3 1 2 2
2 1 1 1
1 1 1 1
1 1 1 1
1 2 2 2
2 1 1 1
2 4 3 4
1 1 1 1
1 1 1 1
1 1 1 1
3 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
2 1 1 1
2 1 1 2
1 1 1 1
1 1 1 1
1 1 1 1
2 2 1 1
2 4 1 2
1 2 1 1
2 2 1 1
1 4 4 4
1 1 1 1
1 2 2 2
1 2 1 1
1 1 1 1
1 1 1 1
1 1 1 1
2 2 1 1
2 2 1 1
2 2 2 2
2 2 1 1
1 2 1 1
1 4 2 2
1 2 2 1
1 1 1 1
2 3 2 2
1 1 1 1
1 1 1 1
1 1 1 1
2 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 2 1 1
2 1 1 1
2 2 2 2
1 1 1 1
1 1 1 1
1 6 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 2 1 1
3 2 1 2
2 2 1 2
1 1 1 1
1 1 1 1
1 1 1 1
2 1 1 1
2 1 1 1
2 2 1 1
3 4 2 3
1 2 1 1
2 3 2 2
2 5 3 2
1 1 1 1
4 4 4 4
1 1 1 1
1 2 1 1
1 1 1 1
1 1 1 1
1 3 1 1
1 1 1 1
1 1 1 1
2 1 1 1
1 2 1 2
1 1 1 2
2 2 1 1
1 1 1 1
1 1 1 1
4 1 1 1
5 2 1 1
1 2 1 1
1 1 1 2
1 1 1 1
1 1 1 1
4 3 3 2
1 1 1 1
2 2 1 1
2 3 2 2
1 1 1 1
1 2 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
1 1 1 1
3 2 3 3
1 1 1 1
2 2 1 1
1 1 1 1
2 1 1 1
1 1 1 1
1 1 1 1
1 3 1 1
1 1 1 1
1 1 1 4
2 2 2 3
1 2 1 1
3 3 5 3
1 1 1 1
1 1 1 1
1 1 1 1
1 2 1 1
1 1 1 1
1 1 1 1
2 2 4 1
1 1 1 1
1 1 1 1
2 4 3 1
1 1 1 1
1 1 1 1
2 2 1 1
1 1 1 1
2 3 2 2
1 2 1 1
1 1 1 1
2 1 1 1
4 4 3 3
2 2 4 1
1 1 1 1
1 1 1 1
5 5 2 5
1 1 1 1
2 1 1 1
3 2 2 2
2 3 1 1
1 1 1 1
1 2 1 1
2 2 2 1
3 2 3 2
1 2 1 1
1 1 1 1
2 4 1 1
1 1 1 1
1 1 1 1
2 2 1 1
NA NA NA NA
NA NA NA NA
NA NA NA NA
NA NA NA NA
1 2 1 1
NA NA NA NA
NA NA NA NA
NA NA NA NA
NA NA NA NA
NA NA NA NA
NA NA NA NA
NA NA NA NA
NA NA NA NA
NA NA NA NA
NA NA NA NA
NA NA NA NA
NA NA NA NA

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' @ jenkins.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 & 1 seconds \tabularnewline
R Server & 'Gwilym Jenkins' @ jenkins.wessa.net \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=270353&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' @ jenkins.wessa.net[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=270353&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=270353&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' @ jenkins.wessa.net






Cronbach Alpha and Related Statistics
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.87020.88050.85280.6481
AMS5 excluded0.82190.84160.78970.6392
AMS12 excluded0.86620.86940.81940.6894
AMS19 excluded0.82930.84150.78270.6389
AMS26 excluded0.82370.83330.7710.625

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.8702 & 0.8805 & 0.8528 & 0.6481 \tabularnewline
AMS5 excluded & 0.8219 & 0.8416 & 0.7897 & 0.6392 \tabularnewline
AMS12 excluded & 0.8662 & 0.8694 & 0.8194 & 0.6894 \tabularnewline
AMS19 excluded & 0.8293 & 0.8415 & 0.7827 & 0.6389 \tabularnewline
AMS26 excluded & 0.8237 & 0.8333 & 0.771 & 0.625 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=270353&T=1

[TABLE]
[ROW][C]Cronbach Alpha and Related Statistics[/C][/ROW]
[ROW][C]Items[/C][C]Cronbach Alpha[/C][C]Std. Alpha[/C][C]G6(smc)[/C][C]Average R[/C][/ROW]
[ROW][C]All itmes[/C][C]0.8702[/C][C]0.8805[/C][C]0.8528[/C][C]0.6481[/C][/ROW]
[ROW][C]AMS5 excluded[/C][C]0.8219[/C][C]0.8416[/C][C]0.7897[/C][C]0.6392[/C][/ROW]
[ROW][C]AMS12 excluded[/C][C]0.8662[/C][C]0.8694[/C][C]0.8194[/C][C]0.6894[/C][/ROW]
[ROW][C]AMS19 excluded[/C][C]0.8293[/C][C]0.8415[/C][C]0.7827[/C][C]0.6389[/C][/ROW]
[ROW][C]AMS26 excluded[/C][C]0.8237[/C][C]0.8333[/C][C]0.771[/C][C]0.625[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=270353&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=270353&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:

Cronbach Alpha and Related Statistics
ItemsCronbach AlphaStd. AlphaG6(smc)Average R
All itmes0.87020.88050.85280.6481
AMS5 excluded0.82190.84160.78970.6392
AMS12 excluded0.86620.86940.81940.6894
AMS19 excluded0.82930.84150.78270.6389
AMS26 excluded0.82370.83330.7710.625


Figures (Output of Computation)

Input Parameters & R Code

Parameters (Session):
Parameters (R input):
par1 = TRUE ;
R code (references can be found in the software module):
library(psych)
par1b <- T
if(par1=='FALSE') par1b <- F
z <- t(y)
(r <- alpha(z,check.keys=par1b))
load(file='createtable')
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'Cronbach Alpha and Related Statistics',5,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Items',1,TRUE)
a<-table.element(a,'Cronbach Alpha',1,TRUE)
a<-table.element(a,'Std. Alpha',1,TRUE)
a<-table.element(a,'G6(smc)',1,TRUE)
a<-table.element(a,'Average R',1,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'All itmes',header=TRUE)
a<-table.element(a,round(r$total['raw_alpha'],4))
a<-table.element(a,round(r$total['std.alpha'],4))
a<-table.element(a,round(r$total['G6(smc)'],4))
a<-table.element(a,round(r$total['average_r'],4))
a<-table.row.end(a)
n = length(z[1,])
for (i in 1:n) {
a<-table.row.start(a)
a<-table.element(a,paste(colnames(z)[i],' excluded',sep=''),header=TRUE)
a<-table.element(a,round(r$alpha.drop[i,'raw_alpha'],4))
a<-table.element(a,round(r$alpha.drop[i,'std.alpha'],4))
a<-table.element(a,round(r$alpha.drop[i,'G6(smc)'],4))
a<-table.element(a,round(r$alpha.drop[i,'average_r'],4))
a<-table.row.end(a)
}
a<-table.end(a)
table.save(a,file='mytable.tab')