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Author's title

Author

*The author of this computation has been verified*

R Software Module

rwasp_cronbach.wasp

Title produced by software

Cronbach Alpha

Date of computation

Wed, 10 Dec 2014 14:51:35 +0000

Cite this page as follows

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2014/Dec/10/t1418223117m31tfetv3rp46zt.htm/, Retrieved Thu, 10 Sep 2026 15:50:57 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=265306, Retrieved Thu, 10 Sep 2026 15:50:57 +0000

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Original text written by user:

IsPrivate?

No (this computation is public)

User-defined keywords

Estimated Impact

413

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)

-     [Cronbach Alpha] [Intrinsic Motivat...] [2010-10-12 11:40:37] [b98453cac15ba1066b407e146608df68]
- RM D    [Cronbach Alpha] [Cronbach Alpha] [2014-12-10 14:51:35] [ec1b40d1a9751af99658fe8fca4f9eca] [Current]

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Dataseries X:

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Histogram

Boxplots

0 1.7 1 1.6
0 1.7 1.3 1.8
0 1.8 2 1.8
0 2 2 1.8
0 2 1.8 2.1
2.5 1.9 1.8 0.1
0.5 2.2 2.1 1.6
0.5 2.1 1.8 1.9
1 1.7 1.8 1.9
1 2.1 2 1.6
1 1.8 1.7 2.2
2.5 1.9 1.1 1.8
1 2.3 2.1 1.9
1.5 1.8 1.9 2.4
1.5 2.1 2 2.1
1.5 1.9 1.8 2.4
1 2.6 2 2.2
1 2.4 2 2.4
3.5 1.7 1.6 1.2
2 2.2 2.1 1.9
2.5 1.9 1.9 1.9
3 1.8 1.6 1.8
2.5 2.2 2 1.8
2.5 2.1 1.9 2.1
3.5 1.8 1.8 1.6
3 1.9 2 1.9
3.5 2 2 1.5
3.5 1.7 2 1.8
3.5 2 1.8 1.8
3.5 2.1 2.1 1.5
3.5 2.2 2 1.6
2.5 2.8 2.2 1.8
3.5 2.1 2.1 1.5
3 2.3 2.1 2.2
3 2.1 2.2 2.2
3.5 1.8 1.9 2.4
2.5 3.2 2.1 1.9
4 1.9 2 1.9
3.5 2.2 1.8 2.4
4.5 1.5 2 1.9
4 1.9 2 2.1
4.5 1.9 1.9 1.8
4.5 2.5 1.8 1.5
3.5 2.2 2.2 2.4
4.5 1.9 2.1 1.8
4.5 1.8 2 2.1
4 2.1 2.1 2.2
5 2.2 2 1.5
5 1.8 1.9 1.9
4.5 2.1 2.2 1.9
4.5 2.3 2 2.1
5 1.8 2 1.9
4 2.2 2.3 2.4
5 1.8 2 2.1
4.5 2 2.1 2.2
4.5 2.9 2.2 1.5
4 2.8 2.3 2.1
5.5 1.8 1.8 1.9
5 2.3 1.9 1.9
5 2 2 2.2
4.5 2.6 2.2 2.1
5 2.1 2.1 2.2
5 2.5 1.9 1.9
5.5 2 1.9 1.9
4.5 2.4 2 2.4
5.5 1.9 1.8 2.1
5.5 1.9 2 2.1
5 2.1 2.2 2.4
5.5 1.9 2.1 2.1
5.5 2.3 2.1 1.8
5.5 2.1 2 2.1
5 2.3 2.1 2.4
5.5 2 2 2.2
5.5 2.2 2.1 2.1
5.5 2.5 2.2 1.8
5 2.7 2.3 1.9
6.5 1.9 2.2 1.5
6 2.1 2 2.1
6 2.1 2.1 1.9
6 1.9 1.9 2.4
6 2.2 2 2.1
5 2.9 2.2 2.1
6 2.4 2 2.1
5.5 2.7 2.3 2.1
6.5 2.1 2 1.9
6.5 2.2 2.1 1.8
7 1.7 1.8 2.1
6 2.4 2.2 2.1
7.5 1.6 1.7 1.8
6.5 2.2 2 2.1
7.5 1.8 2.1 1.5
6.5 2.3 2.1 2.1
6.5 2 2.3 2.2
6.5 2.3 2.1 2.1
7 2 2.1 2.1
7.5 1.9 2 1.8
6.5 2.4 2.1 2.2
7 2.4 2 1.9
7.5 1.9 2.1 1.8
7 1.9 1.9 2.5
7.5 1.9 1.9 2.1
7 2 2.1 2.4
8 1.8 1.8 2.1
6.5 3.5 2.2 1.6
7.5 2.3 1.7 2.2
8 1.9 1.9 2.4
8.5 2.1 2 1.6
7.5 2.7 2.2 2.1
7.5 2.6 2.1 2.4
8.5 2.1 2.1 2.1
9 2.3 2.2 2.4
7.5 3.5 2.7 2.4

Summary of computational transaction
Raw Input	view raw input (R code)
Raw Output	view raw output of R engine
Computing time	1 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=265306&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=265306&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=265306&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 Input	view raw input (R code)
Raw Output	view raw output of R engine
Computing time	1 seconds
R Server	'Gwilym Jenkins' @ jenkins.wessa.net

Cronbach Alpha and Related Statistics
Items	Cronbach Alpha	Std. Alpha	G6(smc)	Average R
All itmes	0.2098	0.5818	0.5632	0.2581
Ex excluded	0.5036	0.5544	0.5143	0.2932
PR excluded	0.1694	0.5026	0.4094	0.252
PE excluded	0.1382	0.3374	0.2561	0.1451
PA excluded	0.1652	0.6093	0.5656	0.342

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.2098 & 0.5818 & 0.5632 & 0.2581 \tabularnewline
Ex excluded & 0.5036 & 0.5544 & 0.5143 & 0.2932 \tabularnewline
PR excluded & 0.1694 & 0.5026 & 0.4094 & 0.252 \tabularnewline
PE excluded & 0.1382 & 0.3374 & 0.2561 & 0.1451 \tabularnewline
PA excluded & 0.1652 & 0.6093 & 0.5656 & 0.342 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=265306&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]0.2098[/C][C]0.5818[/C][C]0.5632[/C][C]0.2581[/C][/ROW]
[ROW][C]Ex excluded[/C][C]0.5036[/C][C]0.5544[/C][C]0.5143[/C][C]0.2932[/C][/ROW]
[ROW][C]PR excluded[/C][C]0.1694[/C][C]0.5026[/C][C]0.4094[/C][C]0.252[/C][/ROW]
[ROW][C]PE excluded[/C][C]0.1382[/C][C]0.3374[/C][C]0.2561[/C][C]0.1451[/C][/ROW]
[ROW][C]PA excluded[/C][C]0.1652[/C][C]0.6093[/C][C]0.5656[/C][C]0.342[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=265306&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=265306&T=1

As an alternative you can also use a QR Code:

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

Cronbach Alpha and Related Statistics
Items	Cronbach Alpha	Std. Alpha	G6(smc)	Average R
All itmes	0.2098	0.5818	0.5632	0.2581
Ex excluded	0.5036	0.5544	0.5143	0.2932
PR excluded	0.1694	0.5026	0.4094	0.252
PE excluded	0.1382	0.3374	0.2561	0.1451
PA excluded	0.1652	0.6093	0.5656	0.342

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')

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Tree of Dependent Computations

Dataset

Tables (Output of Computation)

Figures (Output of Computation)

Input Parameters & R Code