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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

Fri, 23 Dec 2016 14:14:28 +0100

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/2016/Dec/23/t148249889295pvrlv6tza1ok6.htm/, Retrieved Wed, 05 Nov 2025 07:00:42 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=302931, Retrieved Wed, 05 Nov 2025 07:00:42 +0000

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Original text written by user:

IsPrivate?

No (this computation is public)

User-defined keywords

Estimated Impact

229

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

-       [Cronbach Alpha] [] [2016-12-23 13:14:28] [361c8dad91b3f1ef2e651cd04783c23b] [Current]

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Dataseries X:

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Histogram

Boxplots

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

Summary of computational transaction
Raw Input	view raw input (R code)
Raw Output	view raw output of R engine
Computing time	0 seconds
R Server	Big Analytics Cloud Computing Center

\begin{tabular}{lllllllll}
\hline
Summary of computational transaction \tabularnewline
Raw Input view raw input (R code)  \tabularnewline
Raw Outputview raw output of R engine  \tabularnewline
Computing time0 seconds \tabularnewline
R ServerBig Analytics Cloud Computing Center \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=302931&T=0

[TABLE]
[ROW]

Summary of computational transaction[/C][/ROW] [ROW]

Raw Input[/C]

view raw input (R code) [/C][/ROW] [ROW]

Raw Output[/C]

view raw output of R engine [/C][/ROW] [ROW]

Computing time[/C]

0 seconds[/C][/ROW] [ROW]

R Server[/C]

Big Analytics Cloud Computing Center[/C][/ROW] [/TABLE] Source: https://freestatistics.org/blog/index.php?pk=302931&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=302931&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	0 seconds
R Server	Big Analytics Cloud Computing Center

Cronbach Alpha and Related Statistics
Items	Cronbach Alpha	Std. Alpha	G6(smc)	Average R
All itmes	0.3302	0.3401	0.3303	0.0791
SK1 excluded	0.2598	0.2662	0.2467	0.0676
SK2 excluded	0.2114	0.2253	0.2078	0.055
SK3 excluded	0.3537	0.3468	0.3214	0.096
SK4 excluded	0.2788	0.2905	0.2798	0.0757
SK5 excluded	0.3098	0.3163	0.2982	0.0847
SK6 excluded	0.3256	0.3462	0.3213	0.0957

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.3302 & 0.3401 & 0.3303 & 0.0791 \tabularnewline
SK1 excluded & 0.2598 & 0.2662 & 0.2467 & 0.0676 \tabularnewline
SK2 excluded & 0.2114 & 0.2253 & 0.2078 & 0.055 \tabularnewline
SK3 excluded & 0.3537 & 0.3468 & 0.3214 & 0.096 \tabularnewline
SK4 excluded & 0.2788 & 0.2905 & 0.2798 & 0.0757 \tabularnewline
SK5 excluded & 0.3098 & 0.3163 & 0.2982 & 0.0847 \tabularnewline
SK6 excluded & 0.3256 & 0.3462 & 0.3213 & 0.0957 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=302931&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]0.3302[/C][C]0.3401[/C][C]0.3303[/C][C]0.0791[/C][/ROW]
[ROW][C]SK1 excluded[/C][C]0.2598[/C][C]0.2662[/C][C]0.2467[/C][C]0.0676[/C][/ROW]
[ROW][C]SK2 excluded[/C][C]0.2114[/C][C]0.2253[/C][C]0.2078[/C][C]0.055[/C][/ROW]
[ROW][C]SK3 excluded[/C][C]0.3537[/C][C]0.3468[/C][C]0.3214[/C][C]0.096[/C][/ROW]
[ROW][C]SK4 excluded[/C][C]0.2788[/C][C]0.2905[/C][C]0.2798[/C][C]0.0757[/C][/ROW]
[ROW][C]SK5 excluded[/C][C]0.3098[/C][C]0.3163[/C][C]0.2982[/C][C]0.0847[/C][/ROW]
[ROW][C]SK6 excluded[/C][C]0.3256[/C][C]0.3462[/C][C]0.3213[/C][C]0.0957[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=302931&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=302931&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	0.3302	0.3401	0.3303	0.0791
SK1 excluded	0.2598	0.2662	0.2467	0.0676
SK2 excluded	0.2114	0.2253	0.2078	0.055
SK3 excluded	0.3537	0.3468	0.3214	0.096
SK4 excluded	0.2788	0.2905	0.2798	0.0757
SK5 excluded	0.3098	0.3163	0.2982	0.0847
SK6 excluded	0.3256	0.3462	0.3213	0.0957

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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Description of Statistical Computation

Tree of Dependent Computations

Dataset

Tables (Output of Computation)

Figures (Output of Computation)

Input Parameters & R Code