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*Unverified author*

R Software Module

rwasp_cronbach.wasp

Title produced by software

Cronbach Alpha

Date of computation

Wed, 28 Mar 2018 09:12:28 +0200

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Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2018/Mar/28/t15222212501jgh0fbpny8vqlb.htm/, Retrieved Wed, 09 Sep 2026 00:31:17 +0200

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=, Retrieved Wed, 09 Sep 2026 00:31:17 +0200

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User-defined keywords

alpha cronbach travail différentielle psy

Estimated Impact

Dataseries X:

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Histogram

Boxplots

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

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	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 time1 seconds \tabularnewline
R ServerBig Analytics Cloud Computing Center \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=&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]

1 seconds[/C][/ROW] [ROW]

R Server[/C]

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

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

Cronbach Alpha and Related Statistics
Items	Cronbach Alpha	Std. Alpha	G6(smc)	Average R
All itmes	0.7999	0.8002	0.8274	0.2503
Q1 excluded	0.7868	0.7868	0.8139	0.2512
Q2 excluded	0.773	0.774	0.7986	0.2375
Q3 excluded	0.7993	0.8009	0.8262	0.2677
Q4 excluded	0.791	0.7906	0.8164	0.2555
Q5 excluded	0.7919	0.7926	0.8194	0.2579
Q6 excluded	0.8005	0.8016	0.8264	0.2686
Q8 excluded	0.774	0.7727	0.7988	0.2361
Q13 excluded	0.7707	0.7704	0.7922	0.2338
Q14 excluded	0.7721	0.7714	0.7917	0.2347
Q21 excluded	0.7887	0.789	0.8143	0.2537
Q22 excluded	0.7978	0.798	0.8202	0.2642
Q24 excluded	0.7772	0.7788	0.8012	0.2424

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.7999 & 0.8002 & 0.8274 & 0.2503 \tabularnewline
Q1 excluded & 0.7868 & 0.7868 & 0.8139 & 0.2512 \tabularnewline
Q2 excluded & 0.773 & 0.774 & 0.7986 & 0.2375 \tabularnewline
Q3 excluded & 0.7993 & 0.8009 & 0.8262 & 0.2677 \tabularnewline
Q4 excluded & 0.791 & 0.7906 & 0.8164 & 0.2555 \tabularnewline
Q5 excluded & 0.7919 & 0.7926 & 0.8194 & 0.2579 \tabularnewline
Q6 excluded & 0.8005 & 0.8016 & 0.8264 & 0.2686 \tabularnewline
Q8 excluded & 0.774 & 0.7727 & 0.7988 & 0.2361 \tabularnewline
Q13 excluded & 0.7707 & 0.7704 & 0.7922 & 0.2338 \tabularnewline
Q14 excluded & 0.7721 & 0.7714 & 0.7917 & 0.2347 \tabularnewline
Q21 excluded & 0.7887 & 0.789 & 0.8143 & 0.2537 \tabularnewline
Q22 excluded & 0.7978 & 0.798 & 0.8202 & 0.2642 \tabularnewline
Q24 excluded & 0.7772 & 0.7788 & 0.8012 & 0.2424 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=&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]0.7999[/C][C]0.8002[/C][C]0.8274[/C][C]0.2503[/C][/ROW]
[ROW][C]Q1 excluded[/C][C]0.7868[/C][C]0.7868[/C][C]0.8139[/C][C]0.2512[/C][/ROW]
[ROW][C]Q2 excluded[/C][C]0.773[/C][C]0.774[/C][C]0.7986[/C][C]0.2375[/C][/ROW]
[ROW][C]Q3 excluded[/C][C]0.7993[/C][C]0.8009[/C][C]0.8262[/C][C]0.2677[/C][/ROW]
[ROW][C]Q4 excluded[/C][C]0.791[/C][C]0.7906[/C][C]0.8164[/C][C]0.2555[/C][/ROW]
[ROW][C]Q5 excluded[/C][C]0.7919[/C][C]0.7926[/C][C]0.8194[/C][C]0.2579[/C][/ROW]
[ROW][C]Q6 excluded[/C][C]0.8005[/C][C]0.8016[/C][C]0.8264[/C][C]0.2686[/C][/ROW]
[ROW][C]Q8 excluded[/C][C]0.774[/C][C]0.7727[/C][C]0.7988[/C][C]0.2361[/C][/ROW]
[ROW][C]Q13 excluded[/C][C]0.7707[/C][C]0.7704[/C][C]0.7922[/C][C]0.2338[/C][/ROW]
[ROW][C]Q14 excluded[/C][C]0.7721[/C][C]0.7714[/C][C]0.7917[/C][C]0.2347[/C][/ROW]
[ROW][C]Q21 excluded[/C][C]0.7887[/C][C]0.789[/C][C]0.8143[/C][C]0.2537[/C][/ROW]
[ROW][C]Q22 excluded[/C][C]0.7978[/C][C]0.798[/C][C]0.8202[/C][C]0.2642[/C][/ROW]
[ROW][C]Q24 excluded[/C][C]0.7772[/C][C]0.7788[/C][C]0.8012[/C][C]0.2424[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=&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	0.7999	0.8002	0.8274	0.2503
Q1 excluded	0.7868	0.7868	0.8139	0.2512
Q2 excluded	0.773	0.774	0.7986	0.2375
Q3 excluded	0.7993	0.8009	0.8262	0.2677
Q4 excluded	0.791	0.7906	0.8164	0.2555
Q5 excluded	0.7919	0.7926	0.8194	0.2579
Q6 excluded	0.8005	0.8016	0.8264	0.2686
Q8 excluded	0.774	0.7727	0.7988	0.2361
Q13 excluded	0.7707	0.7704	0.7922	0.2338
Q14 excluded	0.7721	0.7714	0.7917	0.2347
Q21 excluded	0.7887	0.789	0.8143	0.2537
Q22 excluded	0.7978	0.798	0.8202	0.2642
Q24 excluded	0.7772	0.7788	0.8012	0.2424

Parameters (Session):

par1 = TRUE ;

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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Dataset

Tables (Output of Computation)

Figures (Output of Computation)

Input Parameters & R Code