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Author

*The author of this computation has been verified*

R Software Module

rwasp_cronbach.wasp

Title produced by software

Cronbach Alpha

Date of computation

Sun, 12 Dec 2010 14:34:41 +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/2010/Dec/12/t1292164398oy6ifctz4ch2nom.htm/, Retrieved Tue, 07 May 2024 10:08:55 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=108481, Retrieved Tue, 07 May 2024 10:08:55 +0000

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No (this computation is public)

User-defined keywords

Estimated Impact

146

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

-       [Cronbach Alpha] [Cronbach Alpha - ...] [2010-12-12 14:34:41] [93ab421e12cd1017d2b38fdbcbdb62e0] [Current]

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Dataseries X:

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Boxplots

1	1	4	4	4	3	3	2	2
4	2	2	2	3	2	2	4	4
1	2	2	3	2	2	1	2	2
2	2	2	2	2	2	2	2	2
2	2	2	2	2	2	2	2	2
2	2	1	2	2	2	2	1	2
1	2	2	1	3	2	3	2	4
3	3	1	1	2	1	1	2	2
4	4	1	1	1	2	1	2	2
2	2	1	2	2	2	2	2	2
2	3	3	2	2	2	2	4	3
4	4	4	2	4	4	1	4	3
4	4	2	2	2	2	3	2	2
2	2	2	2	2	2	2	2	2
3	1	2	1	2	2	1	1	2
2	1	1	3	1	1	1	1	1
1	3	3	2	2	2	2	3	3
2	2	2	2	2	1	2	1	1
2	3	3	2	3	2	1	2	2
4	4	4	2	4	2	4	4	3
3	4	2	3	4	2	2	4	3
4	4	4	4	4	4	3	3	4
1	4	2	2	4	2	2	2	2
4	4	4	2	4	4	4	3	2
2	2	3	2	2	2	2	2	2
2	3	1	1	2	2	1	2	2
2	2	2	2	4	2	2	2	2
3	4	2	2	2	2	2	2	2
3	3	3	2	3	2	2	2	2
2	2	1	2	2	2	2	2	2
3	3	2	4	4	2	2	2	2
3	4	2	2	3	3	2	3	3
2	4	4	4	4	2	2	2	2
2	5	3	3	2	2	4	2	2
1	3	2	1	2	2	2	2	2
4	3	5	4	4	3	4	2	3
4	4	4	3	5	4	4	3	2
1	2	1	2	2	1	1	1	2
5	4	4	4	4	2	4	3	2
3	2	4	2	4	3	4	2	1
2	3	4	3	5	3	2	3	4
2	2	3	3	3	2	3	2	2
2	2	2	2	2	2	2	2	2
3	2	1	1	3	2	2	2	1
1	3	2	2	2	2	2	3	3
2	3	2	1	1	2	2	1	1
4	2	2	2	2	2	2	2	2
5	4	2	4	4	4	2	4	4
2	4	2	2	4	4	3	4	4
3	4	2	2	4	2	2	2	2
2	3	3	2	4	3	3	4	2
4	1	2	2	2	2	2	2	1
2	4	2	2	2	2	2	2	2
1	2	2	1	1	1	1	1	1
3	3	3	2	4	3	4	3	3
4	4	2	3	2	4	2	2	3
2	4	2	2	4	2	2	2	2
3	2	2	2	2	2	1	2	1
2	1	2	1	2	1	1	1	1
1	2	1	1	1	2	3	1	2
1	2	2	2	2	2	2	2	2
2	4	2	2	2	2	3	2	2
1	3	2	1	2	2	3	2	3
2	2	2	2	2	2	2	2	2
1	2	1	1	1	1	1	1	1
4	4	4	4	5	2	2	2	2
4	4	3	4	3	3	4	3	3
3	2	2	1	2	2	3	2	2
1	1	1	1	1	1	1	1	1
3	2	3	3	2	2	1	2	2
2	4	2	4	4	4	2	2	4
2	3	2	2	2	2	2	2	2
3	4	3	4	5	3	3	2	3
3	2	5	4	4	4	2	3	2
4	4	3	3	3	2	2	3	2
2	1	2	4	2	4	4	2	2
1	2	1	2	2	1	1	2	1
2	4	2	2	2	2	2	2	3
2	4	2	2	2	2	2	1	2
4	4	2	2	4	4	2	2	4
1	3	2	2	2	3	3	3	4
2	2	2	2	2	2	2	2	2
2	2	2	2	4	2	3	2	2
1	4	3	1	4	2	1	2	2
4	3	1	3	2	3	3	2	2
2	4	2	3	2	2	2	2	2
2	3	3	2	3	2	2	2	2
1	1	2	4	2	1	1	1	2
4	2	4	4	4	2	3	2	3
2	3	2	2	2	2	2	2	2
4	4	2	2	4	4	2	2	2
1	1	1	1	1	1	1	2	1
2	3	1	1	2	2	1	2	2
4	3	1	1	3	2	2	3	3
3	2	2	2	2	2	2	2	2
4	4	2	2	4	4	3	4	4
4	4	4	3	2	4	3	3	4
4	4	3	4	3	3	3	2	3
2	3	2	2	2	2	2	2	2
2	2	2	2	2	3	3	3	3
2	3	3	4	2	2	2	2	3
2	1	3	2	2	1	1	2	1
2	3	2	3	2	2	2	2	2
3	2	1	2	2	2	2	2	2
2	4	2	2	3	2	3	2	3
4	3	1	4	2	4	3	2	2
4	4	1	2	2	2	2	2	2
2	3	3	3	4	3	2	2	2
2	3	3	2	3	3	3	4	2
2	2	2	2	2	2	2	2	1
1	2	1	2	1	1	2	1	2
4	4	2	4	2	4	2	4	2
1	3	2	3	2	2	2	3	3
4	4	2	1	5	2	3	2	2
1	1	1	1	1	1	1	1	1
2	2	2	1	2	2	1	2	2
1	4	2	2	2	2	2	2	2
1	2	2	2	2	2	2	2	2
4	2	3	3	2	3	2	3	3
4	4	2	1	2	1	2	2	2
1	5	3	3	5	3	2	3	4
1	2	1	1	2	2	2	2	1
2	4	2	2	2	3	3	2	2
1	2	1	1	2	1	2	3	2
2	2	4	2	2	2	1	2	2
2	2	2	2	2	3	3	2	2
2	2	2	3	2	1	1	1	1
2	3	2	2	3	2	2	2	2
2	2	2	2	2	2	2	2	2
4	4	4	4	4	3	3	3	4
4	3	1	2	4	2	1	2	3
1	2	2	3	2	2	1	1	2
1	2	2	2	4	2	1	2	1
1	1	1	1	4	2	1	3	2
4	2	2	2	2	2	2	2	3
2	4	3	3	4	2	2	3	3
3	2	1	1	3	3	2	1	2
1	2	2	2	2	2	3	2	2
2	4	2	2	2	2	1	1	1
1	2	2	3	3	3	2	3	3
4	4	3	3	4	2	4	3	3
4	5	2	3	4	2	2	4	4
3	2	2	4	5	1	4	2	1
3	4	2	4	2	1	1	2	2
2	3	4	2	NA	4	3	NA	3
3	4	2	3	3	4	3	3	4
3	3	4	3	5	3	3	4	3
3	2	2	2	2	3	3	1	2
2	2	2	1	2	2	1	1	3
2	4	2	2	2	2	2	4	2
3	3	2	2	2	2	2	2	2
4	4	2	4	2	4	2	2	4
5	5	4	4	5	3	4	4	4
2	3	2	2	3	3	1	3	3
2	1	1	3	2	2	4	2	3
2	3	2	2	2	2	2	2	NA
4	4	4	4	3	2	2	2	3
2	4	2	2	3	3	2	2	2
4	4	3	4	2	5	3	2	4

Summary of computational transaction
Raw Input	view raw input (R code)
Raw Output	view raw output of R engine
Computing time	3 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 & 3 seconds \tabularnewline
R Server & 'Gwilym Jenkins' @ 72.249.127.135 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=108481&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]'Gwilym Jenkins' @ 72.249.127.135[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=108481&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=108481&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	3 seconds
R Server	'Gwilym Jenkins' @ 72.249.127.135

Cronbach Alpha and Related Statistics
Items	Cronbach Alpha	Std. Alpha	G6(smc)	Average R
All itmes	0.8498	0.8537	0.8542	0.3933
Q9 excluded	0.8397	0.8429	0.8412	0.4015
Q10 excluded	0.8364	0.8408	0.8389	0.3977
Q13 excluded	0.8329	0.838	0.8319	0.3927
Q14 excluded	0.8379	0.843	0.8386	0.4016
Q18 excluded	0.8293	0.8342	0.8317	0.3861
Q21 excluded	0.8279	0.8313	0.8287	0.3812
Q23 excluded	0.8388	0.8437	0.8433	0.4028
Q25 excluded	0.833	0.8365	0.8322	0.3901
Q34 excluded	0.8307	0.834	0.8266	0.3858

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.8498 & 0.8537 & 0.8542 & 0.3933 \tabularnewline
Q9 excluded & 0.8397 & 0.8429 & 0.8412 & 0.4015 \tabularnewline
Q10 excluded & 0.8364 & 0.8408 & 0.8389 & 0.3977 \tabularnewline
Q13 excluded & 0.8329 & 0.838 & 0.8319 & 0.3927 \tabularnewline
Q14 excluded & 0.8379 & 0.843 & 0.8386 & 0.4016 \tabularnewline
Q18 excluded & 0.8293 & 0.8342 & 0.8317 & 0.3861 \tabularnewline
Q21 excluded & 0.8279 & 0.8313 & 0.8287 & 0.3812 \tabularnewline
Q23 excluded & 0.8388 & 0.8437 & 0.8433 & 0.4028 \tabularnewline
Q25 excluded & 0.833 & 0.8365 & 0.8322 & 0.3901 \tabularnewline
Q34 excluded & 0.8307 & 0.834 & 0.8266 & 0.3858 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=108481&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]0.8498[/C][C]0.8537[/C][C]0.8542[/C][C]0.3933[/C][/ROW]
[ROW][C]Q9 excluded[/C][C]0.8397[/C][C]0.8429[/C][C]0.8412[/C][C]0.4015[/C][/ROW]
[ROW][C]Q10 excluded[/C][C]0.8364[/C][C]0.8408[/C][C]0.8389[/C][C]0.3977[/C][/ROW]
[ROW][C]Q13 excluded[/C][C]0.8329[/C][C]0.838[/C][C]0.8319[/C][C]0.3927[/C][/ROW]
[ROW][C]Q14 excluded[/C][C]0.8379[/C][C]0.843[/C][C]0.8386[/C][C]0.4016[/C][/ROW]
[ROW][C]Q18 excluded[/C][C]0.8293[/C][C]0.8342[/C][C]0.8317[/C][C]0.3861[/C][/ROW]
[ROW][C]Q21 excluded[/C][C]0.8279[/C][C]0.8313[/C][C]0.8287[/C][C]0.3812[/C][/ROW]
[ROW][C]Q23 excluded[/C][C]0.8388[/C][C]0.8437[/C][C]0.8433[/C][C]0.4028[/C][/ROW]
[ROW][C]Q25 excluded[/C][C]0.833[/C][C]0.8365[/C][C]0.8322[/C][C]0.3901[/C][/ROW]
[ROW][C]Q34 excluded[/C][C]0.8307[/C][C]0.834[/C][C]0.8266[/C][C]0.3858[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=108481&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=108481&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	0.8498	0.8537	0.8542	0.3933
Q9 excluded	0.8397	0.8429	0.8412	0.4015
Q10 excluded	0.8364	0.8408	0.8389	0.3977
Q13 excluded	0.8329	0.838	0.8319	0.3927
Q14 excluded	0.8379	0.843	0.8386	0.4016
Q18 excluded	0.8293	0.8342	0.8317	0.3861
Q21 excluded	0.8279	0.8313	0.8287	0.3812
Q23 excluded	0.8388	0.8437	0.8433	0.4028
Q25 excluded	0.833	0.8365	0.8322	0.3901
Q34 excluded	0.8307	0.834	0.8266	0.3858

Parameters (Session):

Parameters (R input):

R code (references can be found in the software module):

library(psych)
z <- t(y)
(r <- alpha(z))
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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Input Parameters & R Code