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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

Sat, 09 Dec 2017 18:56:26 +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/2017/Dec/09/t151284226928erqye6ld4xo3j.htm/, Retrieved Sat, 14 Feb 2026 05:32:59 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=308885, Retrieved Sat, 14 Feb 2026 05:32:59 +0000

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Original text written by user:

IsPrivate?

No (this computation is public)

User-defined keywords

Perceived ease of use RFC

Estimated Impact

381

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

-       [Cronbach Alpha] [Cronbach Alpha 2] [2017-12-09 17:56:26] [97ca58e32232a99e44a6c848c7facc09] [Current]

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Dataseries X:

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Histogram

Boxplots

3	4	5	5	4	4
4	5	5	5	3	4
4	5	4	5	4	5
4	3	5	5	4	5
4	5	5	3	4	2
4	5	5	5	4	4
5	5	4	5	4	4
4	4	2	2	4	4
3	4	4	4	4	4
4	4	4	4	4	4
4	4	4	4	4	4
4	3	3	4	4	5
4	4	4	3	4	5
4	4	4	4	4	4
3	4	4	3	4	5
5	4	5	4	5	4
4	4	4	3	4	3
5	5	4	4	5	4
5	5	5	4	5	5
5	4	3	3	4	2
5	4	4	4	5	4
2	2	3	2	2	2
4	4	5	5	4	2
4	4	5	4	4	5
4	4	4	3	4	3
3	4	2	4	4	4
5	3	4	5	4	5
3	4	3	4	4	5
4	3	4	4	4	4
3	4	3	4	4	3
4	5	4	4	4	5
3	4	3	4	3	3
3	4	2	4	3	5
5	5	5	4	5	2
3	5	3	4	4	2
3	4	3	4	3	4
2	3	3	3	2	1
4	4	5	3	4	5
3	4	3	3	3	2
3	4	4	4	3	4
3	4	5	5	4	5
4	4	3	4	5	5
3	4	2	3	3	4
4	4	2	5	4	5
4	4	3	4	4	5
3	2	2	1	4	3
4	4	3	5	5	5
4	3	2	3	4	5
3	5	3	2	4	5
4	4	4	4	4	4
4	4	4	4	5	4
2	2	2	2	3	3
4	3	3	4	4	5
4	4	3	4	4	4
4	4	4	4	4	5
4	4	4	4	4	3
4	5	4	4	4	4
5	4	5	4	4	3
2	2	2	3	2	4
4	5	5	5	4	5
4	3	4	3	4	4
4	3	4	3	4	4
4	3	4	4	4	4
5	5	4	5	5	5
4	4	1	3	4	2
5	4	4	4	4	5
5	4	4	3	5	1
4	4	4	5	5	4
5	5	2	3	5	5
2	3	2	4	2	5
2	2	2	2	2	3
4	3	5	4	4	3
5	5	5	5	5	5
5	5	5	5	5	5
3	4	2	4	4	3
3	2	3	3	3	4
5	3	4	3	4	3
3	4	3	5	4	5
4	4	3	3	4	1
4	4	4	4	4	5
4	4	3	4	4	5
3	4	4	4	2	4
4	4	5	3	4	4
5	4	5	5	5	4
5	5	5	5	5	5
4	4	3	3	4	5
4	4	4	4	4	4
4	4	3	3	4	4
3	3	2	3	3	4
4	4	4	4	4	4
4	4	4	4	4	5
4	4	3	4	4	5
4	4	4	4	4	4
4	4	2	2	4	2
4	3	3	3	3	2
2	3	2	4	3	5
5	5	5	5	5	4
3	2	3	3	3	3
3	3	4	4	4	4
4	4	4	4	4	4
4	4	4	3	4	4
3	4	3	3	4	4
4	3	4	4	4	1
4	2	4	3	4	1
4	5	4	4	4	5
4	4	5	5	4	5
4	3	3	4	4	5
4	4	2	3	4	4
3	3	3	3	4	3
4	5	4	4	4	4
2	1	1	2	2	1
3	1	2	3	2	2
4	4	4	3	4	2
4	4	4	3	4	2
5	4	4	4	4	5
5	4	5	5	5	3
5	5	5	5	5	4
2	3	2	3	3	3
2	2	2	3	3	2
4	4	4	3	4	4
4	4	4	4	4	4
4	5	3	4	4	4
2	2	2	3	2	4
2	2	3	3	3	4
3	2	2	2	3	2
4	3	5	5	5	2
4	5	5	3	4	3
5	5	5	4	4	2
3	2	2	3	3	4
3	3	4	2	3	4
2	3	2	2	1	2
4	3	3	1	4	4
5	4	4	4	5	2
2	2	3	2	3	1
3	4	3	4	3	3
4	5	5	5	4	5
3	4	5	5	4	3
3	3	4	3	3	2
3	2	3	3	2	1
4	4	3	3	4	3
1	2	2	2	1	1
5	4	5	3	4	3
3	5	3	5	3	5
3	4	2	3	2	2
2	3	1	4	3	3
2	2	3	3	2	1
2	4	1	1	3	3
4	5	5	4	5	5
4	4	4	3	4	4
4	4	5	5	4	5
4	4	3	3	4	5
4	4	4	4	4	3
3	2	3	3	3	3
4	4	4	4	4	4
3	4	5	5	3	4
5	5	5	5	5	4
4	3	3	4	4	4
4	4	4	4	4	4
4	5	5	3	4	5
3	2	3	3	3	1
4	3	3	3	4	3
3	3	3	2	4	4
2	1	2	3	2	1
2	2	3	2	2	2
2	2	1	4	3	3
3	4	2	3	4	4
4	4	4	3	4	4
5	4	5	4	5	2
3	2	3	2	3	2
4	4	4	3	4	2
4	4	4	4	4	4
5	4	4	5	5	4
4	4	3	4	4	4
5	4	4	4	4	4
4	4	5	4	4	3
3	3	4	4	3	3
4	4	5	4	4	5
3	3	3	4	4	5
4	4	4	4	4	3
4	3	3	2	3	5
5	4	4	4	4	5
2	2	3	3	2	4
2	2	4	1	1	3
4	4	3	4	5	3
3	4	3	4	3	5
4	4	4	4	4	4
5	4	4	4	5	5
5	5	4	4	5	4
4	3	4	3	4	4
4	4	5	4	4	4
4	4	3	3	3	4
3	4	5	3	4	4
4	2	4	4	4	4
3	2	3	2	2	1
3	2	2	2	3	2
3	2	3	4	3	3
4	3	3	3	3	2
4	4	3	3	4	2
4	4	5	5	4	5
4	3	4	4	4	4
4	4	3	3	4	4
2	2	3	3	3	3
2	2	3	2	2	2
4	5	4	4	4	2
3	3	2	4	3	4
4	4	4	4	4	4
3	3	2	3	4	4
4	5	4	3	4	5
5	3	2	2	5	4
4	4	4	3	4	1
4	4	4	3	4	1
2	2	3	3	2	2
4	4	4	4	4	5
3	3	2	3	3	2
4	4	4	2	4	2
5	4	4	4	4	4
4	4	4	4	4	5
4	4	4	4	4	3
5	2	2	2	1	1
4	4	4	4	4	3
3	4	3	3	4	2
2	2	1	2	1	3
3	4	3	3	4	2
4	4	2	4	3	4
4	3	4	3	4	4
2	3	1	3	3	4
5	4	3	3	4	2
4	4	4	4	4	4
4	2	3	2	3	2
5	5	5	5	5	4
3	4	4	3	3	3
2	2	2	3	3	2
4	4	4	4	4	4
3	4	3	3	4	3
4	4	4	3	4	5
4	4	4	3	4	5
4	4	4	3	4	5
4	4	4	3	4	5
4	3	4	3	4	2
4	4	3	4	4	5
3	4	3	3	3	5
4	3	4	1	3	3
5	4	4	4	5	5
2	2	2	2	2	2
3	5	4	5	4	4
4	2	2	2	2	2
2	2	3	2	2	1
2	2	3	2	2	1
4	4	4	3	4	5
3	4	3	4	3	5
3	3	3	3	3	3
5	5	3	3	4	5
5	5	5	4	4	5
1	1	2	2	1	1
3	3	3	2	3	3
4	4	4	4	4	5
3	3	3	3	3	3
3	2	3	4	4	1
2	2	2	2	2	1
3	2	3	3	3	2
3	1	2	2	3	1
3	3	3	3	3	3
4	4	4	4	4	4
5	4	5	4	5	2
4	5	3	4	5	4
4	4	4	3	4	4
5	5	5	5	5	1
2	2	3	3	4	5
4	4	2	5	4	5
4	3	4	3	4	3
4	3	3	4	4	5
2	2	2	2	3	5
5	5	5	4	5	5
5	5	4	3	5	5
5	4	4	5	5	5
3	2	3	2	2	3
4	3	5	3	4	4
4	4	4	4	4	5
3	3	4	2	4	3
4	3	3	3	4	4
2	2	3	3	3	4
4	3	4	3	4	2
4	4	4	3	4	4
5	5	5	5	5	4
3	2	2	2	3	5
4	2	3	3	4	4
4	3	3	3	4	4
4	4	4	4	4	3
3	3	3	3	4	5
3	3	4	4	3	4
3	4	4	4	3	4
5	5	5	4	5	4
3	4	5	4	3	3
4	4	4	4	4	5
4	4	3	3	4	4
4	3	4	3	4	5
4	4	3	3	4	4
4	2	4	3	4	3
4	5	5	4	4	4
4	4	4	3	4	4
4	4	4	3	4	2
4	3	4	4	4	5
4	3	3	3	4	1
4	3	4	3	3	3
4	3	4	4	4	4
4	3	4	3	4	2
5	5	5	4	5	5
4	4	4	4	4	4
4	4	4	4	4	4
3	3	3	3	4	5
3	2	3	2	4	3
3	3	2	3	3	3
4	3	3	3	4	5
3	4	4	3	4	3
3	4	2	2	3	2
3	3	2	3	3	4
4	4	4	4	4	4
3	2	2	2	3	3
4	4	5	3	4	5
5	5	5	4	5	5
3	4	3	3	4	4
4	4	4	3	4	4
3	3	4	4	3	4
4	4	4	3	4	4
3	3	3	2	4	1
4	3	4	3	4	2
4	4	4	3	4	3
4	5	5	3	4	3
4	4	4	4	4	5
2	4	3	4	3	5
3	4	4	4	3	1
4	3	3	4	4	5
4	4	4	3	4	4
3	3	4	4	4	5
3	4	3	2	3	4
2	3	3	4	4	5
4	4	3	4	4	3
4	5	5	3	4	3
3	3	3	4	4	3
1	2	1	1	2	1
2	2	2	1	2	1
3	2	3	2	4	1
3	4	4	4	3	3
2	3	2	2	2	1
3	2	2	2	3	3
4	4	4	3	4	4
3	3	4	4	4	2
2	3	3	3	3	2
3	5	5	5	4	5
5	5	5	5	5	5
5	5	5	5	5	5
4	5	3	4	4	5
4	4	4	3	4	3
4	4	3	3	4	2
4	4	2	3	4	5
5	5	4	4	5	5
3	4	3	4	4	4
4	3	2	3	4	5
3	2	3	1	3	4
5	4	5	5	4	5
3	3	3	4	3	4
3	3	4	2	4	4
3	4	4	3	3	4
2	1	1	2	2	2
4	3	4	3	4	4
3	3	3	2	3	1
4	2	3	2	4	2
3	3	5	3	3	1
4	3	2	3	4	5
5	5	4	5	5	5
4	3	3	3	4	3
3	3	4	4	3	2
5	5	3	4	5	5
3	3	4	2	4	4
4	4	4	4	4	4
4	4	4	3	4	3
4	3	4	4	4	4
4	3	4	4	4	3
4	4	4	4	3	2
4	4	4	3	4	3
3	3	3	3	4	4
3	3	4	3	3	3
4	4	3	3	4	5
5	5	3	4	5	4
4	4	3	3	4	4
4	3	4	3	4	3
3	4	4	3	4	4
4	4	4	3	4	4
3	3	2	3	3	4
2	3	3	3	3	3
4	4	4	4	4	5
3	4	3	2	4	4
3	3	3	3	4	2
5	5	5	4	5	5
4	4	5	5	4	4
4	3	4	5	4	5
4	4	4	4	4	1
4	3	4	2	4	3
2	3	2	4	2	2
3	2	2	3	3	2
4	4	3	3	4	5
4	3	4	3	3	1
3	4	4	3	3	3
4	4	4	4	4	3
2	3	2	3	2	2
4	4	5	3	4	5
2	1	2	2	2	2
4	4	4	4	4	4
4	4	4	3	4	2
4	5	4	4	4	4
3	2	3	3	3	1
3	3	2	3	3	2
3	2	3	2	2	4
2	3	4	4	4	2
3	4	3	4	4	4
4	3	3	3	4	3
3	3	3	4	4	5
3	3	3	3	3	2
2	2	2	4	2	2
4	4	4	3	4	4
1	2	2	1	1	1
3	4	4	4	3	5
3	4	5	3	3	5
3	3	3	2	3	2
3	3	4	4	1	1
3	4	3	4	4	4
4	4	4	4	4	3
3	3	3	3	3	3
4	4	3	4	4	3
5	5	5	5	4	5
2	4	3	3	2	1
3	2	2	2	3	4
4	3	3	3	4	2
3	4	3	5	4	2
5	5	4	5	5	5
3	2	4	2	3	1
4	3	2	2	3	2
4	5	4	4	4	4
4	4	4	3	4	4
4	3	4	3	4	3
4	4	4	3	4	5
2	3	3	3	3	3
3	2	4	3	3	4
4	4	4	3	4	5
4	4	4	4	4	3
4	4	4	4	4	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	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=308885&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=308885&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=308885&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	0.8497	0.8639	0.8606	0.514
a excluded	0.8126	0.8287	0.8079	0.4917
b excluded	0.8049	0.825	0.8197	0.4853
c excluded	0.831	0.8481	0.8388	0.5275
d excluded	0.8256	0.8462	0.8377	0.5239
e excluded	0.8062	0.821	0.8025	0.4784
f excluded	0.8701	0.8722	0.8598	0.5771

\begin{tabular}{lllllllll}
\hline
Cronbach Alpha and Related Statistics \tabularnewline
Items & Cronbach Alpha & Std. Alpha & G6(smc) & Average R \tabularnewline
All itmes & 0.8497 & 0.8639 & 0.8606 & 0.514 \tabularnewline
a excluded & 0.8126 & 0.8287 & 0.8079 & 0.4917 \tabularnewline
b excluded & 0.8049 & 0.825 & 0.8197 & 0.4853 \tabularnewline
c excluded & 0.831 & 0.8481 & 0.8388 & 0.5275 \tabularnewline
d excluded & 0.8256 & 0.8462 & 0.8377 & 0.5239 \tabularnewline
e excluded & 0.8062 & 0.821 & 0.8025 & 0.4784 \tabularnewline
f excluded & 0.8701 & 0.8722 & 0.8598 & 0.5771 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=308885&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]0.8497[/C][C]0.8639[/C][C]0.8606[/C][C]0.514[/C][/ROW]
[ROW][C]a excluded[/C][C]0.8126[/C][C]0.8287[/C][C]0.8079[/C][C]0.4917[/C][/ROW]
[ROW][C]b excluded[/C][C]0.8049[/C][C]0.825[/C][C]0.8197[/C][C]0.4853[/C][/ROW]
[ROW][C]c excluded[/C][C]0.831[/C][C]0.8481[/C][C]0.8388[/C][C]0.5275[/C][/ROW]
[ROW][C]d excluded[/C][C]0.8256[/C][C]0.8462[/C][C]0.8377[/C][C]0.5239[/C][/ROW]
[ROW][C]e excluded[/C][C]0.8062[/C][C]0.821[/C][C]0.8025[/C][C]0.4784[/C][/ROW]
[ROW][C]f excluded[/C][C]0.8701[/C][C]0.8722[/C][C]0.8598[/C][C]0.5771[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=308885&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=308885&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	0.8497	0.8639	0.8606	0.514
a excluded	0.8126	0.8287	0.8079	0.4917
b excluded	0.8049	0.825	0.8197	0.4853
c excluded	0.831	0.8481	0.8388	0.5275
d excluded	0.8256	0.8462	0.8377	0.5239
e excluded	0.8062	0.821	0.8025	0.4784
f excluded	0.8701	0.8722	0.8598	0.5771

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')

Free Statistics

Description of Statistical Computation

Tree of Dependent Computations

Dataset

Tables (Output of Computation)

Figures (Output of Computation)

Input Parameters & R Code