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Author

*Unverified author*

R Software Module

rwasp_cronbach.wasp

Title produced by software

Cronbach Alpha

Date of computation

Wed, 22 Jan 2020 12:56:07 +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/2020/Jan/22/t15796943854bn2ra2gbqp9knt.htm/, Retrieved Tue, 08 Sep 2026 21:13:05 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=319019, Retrieved Tue, 08 Sep 2026 21:13:05 +0000

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Original text written by user:

IsPrivate?

No (this computation is public)

User-defined keywords

Estimated Impact

496

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

-       [Cronbach Alpha] [] [2020-01-22 11:56:07] [d41d8cd98f00b204e9800998ecf8427e] [Current]

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Dataseries X:

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Histogram

Boxplots

4	4	3	4	4	2	4	3	4	4	3	3	4	4	4	4	2	4	4	4
4	4	4	2	3	4	3	4	3	4	4	4	4	3	3	4	3	3	4	4
2	3	4	4	4	3	4	4	4	4	2	4	2	4	4	2	4	2	4	4
4	4	4	3	4	4	4	3	4	3	4	1	4	4	4	4	4	3	4	3
3	3	4	4	1	4	4	2	4	4	4	2	3	2	3	3	2	4	3	3
4	4	3	3	4	4	4	4	3	3	3	4	2	4	4	1	4	4	4	1
3	4	4	4	3	4	3	3	4	4	4	4	3	3	3	3	3	4	3	3
4	2	4	4	4	3	4	4	4	4	3	2	4	4	4	4	1	4	4	4
4	4	4	4	2	4	4	4	4	4	2	4	4	4	4	4	2	4	2	4
4	3	3	4	4	3	4	4	4	3	4	3	1	4	2	4	4	4	4	4
4	4	4	3	4	4	4	4	2	2	3	1	2	4	4	3	3	3	4	4
3	4	4	4	3	4	4	4	3	4	4	3	4	4	3	4	1	4	3	2
4	4	3	4	4	3	4	3	4	3	3	4	4	4	2	3	3	4	4	4
4	4	2	4	3	4	3	4	3	4	4	4	2	3	3	4	4	4	1	4
4	3	4	3	3	3	4	4	4	4	4	4	4	4	4	3	3	2	2	3
3	4	3	4	4	4	4	4	4	4	2	4	3	3	2	4	4	4	4	2
4	3	4	4	4	4	4	4	4	4	4	3	1	2	3	4	3	3	4	3
4	4	4	4	2	4	3	4	4	3	3	4	3	4	4	2	4	4	2	4
4	4	4	4	4	4	4	3	3	4	1	4	4	3	4	4	4	4	4	4
4	4	4	2	3	3	4	4	4	3	3	4	4	4	1	3	2	3	3	2
4	4	3	4	4	4	3	4	4	2	4	3	4	3	2	2	4	4	1	4
3	3	4	3	4	4	2	4	4	4	4	4	4	4	4	4	3	4	1	4
4	4	3	2	4	4	4	4	2	3	1	4	3	4	4	4	3	3	4	4
3	4	4	3	4	3	3	3	4	4	4	3	4	2	2	2	4	2	4	3
4	4	4	4	3	4	1	4	3	4	4	3	3	4	4	3	4	4	4	3
4	4	4	4	4	3	2	3	2	4	4	4	4	3	4	4	4	4	2	2
2	3	4	1	3	4	4	4	3	4	3	4	4	4	3	4	4	4	3	4
4	4	3	2	3	4	4	4	4	3	4	4	3	4	4	3	4	3	4	3
3	3	4	4	1	4	2	4	2	4	4	4	2	4	3	4	3	4	3	4
4	4	4	4	3	4	4	4	4	3	4	3	4	3	3	3	4	4	4	4
4	4	4	2	4	3	3	3	4	4	3	4	3	4	4	4	4	4	4	4
4	3	4	4	4	4	1	4	3	4	4	3	4	4	4	4	4	4	4	4
4	4	3	3	4	3	3	4	4	3	4	4	4	4	2	4	3	4	4	3
3	3	4	1	4	4	4	4	3	4	4	4	4	4	4	4	4	3	3	4
4	4	3	3	3	4	4	3	3	3	4	4	4	2	3	3	4	4	4	3
3	4	4	4	4	3	4	4	4	4	4	4	3	4	4	4	3	4	4	2
4	2	4	4	3	4	4	4	4	4	3	3	4	3	4	4	2	4	4	4
4	4	3	4	4	4	2	4	2	4	4	4	3	2	4	4	4	4	2	3
1	3	4	4	4	1	4	4	4	4	3	4	4	3	4	3	3	3	4	4
4	2	3	3	2	2	3	2	3	3	4	4	4	4	3	4	1	4	3	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=319019&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=319019&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=319019&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	0.5537	0.5712	0.7889	0.0625
V1 excluded	0.5375	0.5502	0.7698	0.0605
V2 excluded	0.5088	0.5203	0.7619	0.054
V3 excluded	0.5201	0.5266	0.7613	0.0553
V4 excluded	0.5629	0.5778	0.774	0.0672
V5 excluded	0.5804	0.5913	0.7833	0.0708
V6 excluded	0.5243	0.541	0.751	0.0584
V7 excluded	0.522	0.5486	0.7546	0.0601
V8 excluded	0.5514	0.5753	0.7807	0.0665
V9 excluded	0.5467	0.5646	0.7678	0.0639
V10 excluded	0.5435	0.5574	0.7539	0.0622
V11 excluded	0.5448	0.5665	0.7711	0.0644
V12 excluded	0.5646	0.5814	0.7761	0.0681
V13 excluded	0.539	0.5562	0.7787	0.0619
V14 excluded	0.5418	0.5662	0.773	0.0643
V15 excluded	0.5522	0.5661	0.7771	0.0643
V16 excluded	0.5483	0.5678	0.7682	0.0647
V17 excluded	0.4971	0.5247	0.7496	0.0549
V18 excluded	0.5452	0.5645	0.7744	0.0639
V19 excluded	0.5414	0.5586	0.7829	0.0624
V20 excluded	0.5353	0.5543	0.7689	0.0614

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.5537 & 0.5712 & 0.7889 & 0.0625 \tabularnewline
V1 excluded & 0.5375 & 0.5502 & 0.7698 & 0.0605 \tabularnewline
V2 excluded & 0.5088 & 0.5203 & 0.7619 & 0.054 \tabularnewline
V3 excluded & 0.5201 & 0.5266 & 0.7613 & 0.0553 \tabularnewline
V4 excluded & 0.5629 & 0.5778 & 0.774 & 0.0672 \tabularnewline
V5 excluded & 0.5804 & 0.5913 & 0.7833 & 0.0708 \tabularnewline
V6 excluded & 0.5243 & 0.541 & 0.751 & 0.0584 \tabularnewline
V7 excluded & 0.522 & 0.5486 & 0.7546 & 0.0601 \tabularnewline
V8 excluded & 0.5514 & 0.5753 & 0.7807 & 0.0665 \tabularnewline
V9 excluded & 0.5467 & 0.5646 & 0.7678 & 0.0639 \tabularnewline
V10 excluded & 0.5435 & 0.5574 & 0.7539 & 0.0622 \tabularnewline
V11 excluded & 0.5448 & 0.5665 & 0.7711 & 0.0644 \tabularnewline
V12 excluded & 0.5646 & 0.5814 & 0.7761 & 0.0681 \tabularnewline
V13 excluded & 0.539 & 0.5562 & 0.7787 & 0.0619 \tabularnewline
V14 excluded & 0.5418 & 0.5662 & 0.773 & 0.0643 \tabularnewline
V15 excluded & 0.5522 & 0.5661 & 0.7771 & 0.0643 \tabularnewline
V16 excluded & 0.5483 & 0.5678 & 0.7682 & 0.0647 \tabularnewline
V17 excluded & 0.4971 & 0.5247 & 0.7496 & 0.0549 \tabularnewline
V18 excluded & 0.5452 & 0.5645 & 0.7744 & 0.0639 \tabularnewline
V19 excluded & 0.5414 & 0.5586 & 0.7829 & 0.0624 \tabularnewline
V20 excluded & 0.5353 & 0.5543 & 0.7689 & 0.0614 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=319019&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]0.5537[/C][C]0.5712[/C][C]0.7889[/C][C]0.0625[/C][/ROW]
[ROW][C]V1 excluded[/C][C]0.5375[/C][C]0.5502[/C][C]0.7698[/C][C]0.0605[/C][/ROW]
[ROW][C]V2 excluded[/C][C]0.5088[/C][C]0.5203[/C][C]0.7619[/C][C]0.054[/C][/ROW]
[ROW][C]V3 excluded[/C][C]0.5201[/C][C]0.5266[/C][C]0.7613[/C][C]0.0553[/C][/ROW]
[ROW][C]V4 excluded[/C][C]0.5629[/C][C]0.5778[/C][C]0.774[/C][C]0.0672[/C][/ROW]
[ROW][C]V5 excluded[/C][C]0.5804[/C][C]0.5913[/C][C]0.7833[/C][C]0.0708[/C][/ROW]
[ROW][C]V6 excluded[/C][C]0.5243[/C][C]0.541[/C][C]0.751[/C][C]0.0584[/C][/ROW]
[ROW][C]V7 excluded[/C][C]0.522[/C][C]0.5486[/C][C]0.7546[/C][C]0.0601[/C][/ROW]
[ROW][C]V8 excluded[/C][C]0.5514[/C][C]0.5753[/C][C]0.7807[/C][C]0.0665[/C][/ROW]
[ROW][C]V9 excluded[/C][C]0.5467[/C][C]0.5646[/C][C]0.7678[/C][C]0.0639[/C][/ROW]
[ROW][C]V10 excluded[/C][C]0.5435[/C][C]0.5574[/C][C]0.7539[/C][C]0.0622[/C][/ROW]
[ROW][C]V11 excluded[/C][C]0.5448[/C][C]0.5665[/C][C]0.7711[/C][C]0.0644[/C][/ROW]
[ROW][C]V12 excluded[/C][C]0.5646[/C][C]0.5814[/C][C]0.7761[/C][C]0.0681[/C][/ROW]
[ROW][C]V13 excluded[/C][C]0.539[/C][C]0.5562[/C][C]0.7787[/C][C]0.0619[/C][/ROW]
[ROW][C]V14 excluded[/C][C]0.5418[/C][C]0.5662[/C][C]0.773[/C][C]0.0643[/C][/ROW]
[ROW][C]V15 excluded[/C][C]0.5522[/C][C]0.5661[/C][C]0.7771[/C][C]0.0643[/C][/ROW]
[ROW][C]V16 excluded[/C][C]0.5483[/C][C]0.5678[/C][C]0.7682[/C][C]0.0647[/C][/ROW]
[ROW][C]V17 excluded[/C][C]0.4971[/C][C]0.5247[/C][C]0.7496[/C][C]0.0549[/C][/ROW]
[ROW][C]V18 excluded[/C][C]0.5452[/C][C]0.5645[/C][C]0.7744[/C][C]0.0639[/C][/ROW]
[ROW][C]V19 excluded[/C][C]0.5414[/C][C]0.5586[/C][C]0.7829[/C][C]0.0624[/C][/ROW]
[ROW][C]V20 excluded[/C][C]0.5353[/C][C]0.5543[/C][C]0.7689[/C][C]0.0614[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=319019&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=319019&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	0.5537	0.5712	0.7889	0.0625
V1 excluded	0.5375	0.5502	0.7698	0.0605
V2 excluded	0.5088	0.5203	0.7619	0.054
V3 excluded	0.5201	0.5266	0.7613	0.0553
V4 excluded	0.5629	0.5778	0.774	0.0672
V5 excluded	0.5804	0.5913	0.7833	0.0708
V6 excluded	0.5243	0.541	0.751	0.0584
V7 excluded	0.522	0.5486	0.7546	0.0601
V8 excluded	0.5514	0.5753	0.7807	0.0665
V9 excluded	0.5467	0.5646	0.7678	0.0639
V10 excluded	0.5435	0.5574	0.7539	0.0622
V11 excluded	0.5448	0.5665	0.7711	0.0644
V12 excluded	0.5646	0.5814	0.7761	0.0681
V13 excluded	0.539	0.5562	0.7787	0.0619
V14 excluded	0.5418	0.5662	0.773	0.0643
V15 excluded	0.5522	0.5661	0.7771	0.0643
V16 excluded	0.5483	0.5678	0.7682	0.0647
V17 excluded	0.4971	0.5247	0.7496	0.0549
V18 excluded	0.5452	0.5645	0.7744	0.0639
V19 excluded	0.5414	0.5586	0.7829	0.0624
V20 excluded	0.5353	0.5543	0.7689	0.0614

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